The slope of two perpendicular lines must be in negative reciprocal relationship, if the slopes of two lines are negative reciprocals to each other, then these two lines must be perpendicular. Example 1: If line y=mx+2 and line y=4x+3 are perpendicular, what is the value of m The slopes of two perpendicular lines are negative reciprocals. What is a perpendicular line? In elementary geometry, the property of being perpendicular (perpendicularity) is the relationship between two lines which meet at a right angle (90 degrees). A line is said to be perpendicular to another line if the two lines intersect at a right angle Slopes of perpendicular lines are opposite reciprocals, meaning the product of the two slopes is negative 1. Which did you include in your response The slopes of two perpendicular lines are negative reciprocals of each other. This means that if a line is perpendicular to a line that has slope m, then the slope of the line is -1 / m. For..

Relationship Between Perpendicular Lines Let's start by drawing a diagram to help us identify the relationship between the slopes of perpendicular lines. Start by drawing two lines, lines 1 and 2,.. In the case of the parallel line, the slope of the two lines is parallel to each other. m 1 = m 2. Construction of Perpendicular Lines. Construction of the perpendicular line is a very simple process. The angle between the two lines should be equal to 90 degrees. So to construct perpendicular lines, you will need a compass and a straight line.

Put this together with the sign change, and you get that the slope of a perpendicular line is the negative reciprocal of the slope of the original line — and two lines with slopes that are negative reciprocals of each other are perpendicular to each other. To give a numerical example of negative reciprocals, if the one line's slope is On the other hand, the slope of perpendicular lines are the negative reciprocals of each other, and a pair of these lines intersects at 90 degrees. Perpendicular Lines in greater depth Parallel & Perpendicular Lines ** Answer: Option first Slope of AC×Slope of DC = -EC/DE×DE/EC is the missing statement in step 6**. Explanation: Here, we have two triangles and which are similar to each other. And, Since, if two triangles are similar then their corresponding ratios of sides are equal

- Perpendicular Slope. In plane geometry, all lines have slopes. All slopes are compared to some other line, usually an x-axis. The slope of a line is its angle, or steepness, compared to that x-axis value. Mathematically, it is the change in y-value compared to its change in x-value. A perpendicular slope is the negative reciprocal of any other.
- The slopes of perpendicular lines are negative reciprocals. For example, if the slope of a line is 4/5, a line perpendicular to it would have a slope of - 5/4
- A gradient of a line is also called a slope of a line. It basically means how steep is the line. It can be found using the formula: rise divided by run. In the case below, it rose 2 while only going across 1, which means this line has a slope (gradient) of 2
- Slopes of Perpendicular Lines Perpendicular lines intersect at a right angle. If two nonvertical lines are perpendicular, then their slopes are negative reciprocals of each other. That is, if the slope of one line is, then the slope of any perpendicular line is
- The product of the slopes of two perpendicular lines is -1
- If two nonvertical lines are perpendicular, then the product of their slope is -1.An equivalent way of stating this relationship is to say that one line is perpendicular to another line if its.
- A vertical line and a horizontal line are perpendicular. For lines that are neither vertical nor horizontal, they are perpendicular if and only if the slope of one is the negative reciprocal of the slope of the other. That is, if one has slope m, m, the other has slope − 1 m. − 1 m

By definition, perpendicular lines are those that intersect at right angle. The definition requires only one angle (out of four formed by two intersecting lines) to be the right angle (that is, measure at #90^o#).Obviously, all others are also measure #90^o# since an angle adjacent to one measured #90^o# must complement it to a straight angle of #180^o# and, hence, must be #90^o# itself Then put the expression in slope-intercept form. 52. Use the above derived formula to put the following standard equation in slope intercept form: [latex]7x - 5y=25[/latex]. 53. Given that the following coordinates are the vertices of a rectangle, prove that this truly is a rectangle by showing the slopes of the sides that meet are perpendicular The slope of a straight line between two points says (x 1,y 1) and (x 2,y 2) can be easily determined by finding the difference between the coordinates of the points. The slope is usually represented by the letter 'm'

- Two non-vertical lines are perpendicular if the slope of one is the negative reciprocal of the slope of the other. If the slope of the first equation is 4, then the slope of the second equation will need to be for the lines to be perpendicular
- Find the slope of the line that is perpendicular a line with the slope of 5. Parallel Lines. What is the relationship between the two lines? m = -7/6. Find the slope of a line that is perpendicular to the line that is created by the points (-2,1) and (5,7) Perpendicular
- These
**lines**are**perpendicular**and have negative reciprocal**slopes**. Another way of saying negative reciprocal is FLIP AND SWITCH, which means to take the**slope****of****the**first**line**, flip the fraction and switch the sign (positive to negative or vice versa). In this case, the green**line****slope****is**-(6/7) and the purple**line****slope****is**+(7/6 - It is well known that the relationship between two perpendicular lines with slopes m1 and m2 is that m2 is the negative of the reciprocal of m1. In this short paper a simple derivation of this relationship is provided using the Rotational Transformation Matrix
- Given: It is given in the question that the two slopes − 3 and 1 3 are given.. Concept Used: In this we have to use the concept of perpendicular lines, m 1 = − 1 m 2 such that m 1 a n d m 2 be the slope of two different non vertical lines. If the slopes of the two lines are negative reciprocal of each other and also the two lines are non − vertical in nature and it also full the.

- Note that two lines are parallel if their slopes are equal and they have different y-intercepts. In other words, perpendicular slopes are negative reciprocals of each other. Here is a quick review of the slope/intercept form of a line. What is point slope formula
- Parallel lines have the same slope. Let's Practice: If a line has a slope of 5, what is the slope of a line parallel and a line perpendicular? The parallel line will have the same slope which is 5. The perpendicular line will have a slope of which is the negative reciprocal. To assist you in seeing this relationship, look at 5 as the fraction
- we are asked which of these lines are perpendicular and has to be perpendicular to one of the other lines you can't be just perpendicular by yourself and perpendicular lines just so you have a visualization for what perpendicular lines look like two lines are perpendicular if they intersect at right angles so if this is one line right there a perpendicular line will look like this a.
- Therefore, the relationship of the slopes of perpendicular lines can be demonstrated as true by rotating a non-special line along with its slope triangle. a) Prove the relationship between perpendicular slopes as true for all cases using the drawing. Explain why the slope of the perpendicular line must always be —e if neither a nor b is zero

1) In this lesson, you will create perpendicular lines in order to explore the relationship between their slopes. Additionally, you will create a scatter plot of the slopes and discuss a function that will match the plotted points. Follow the directions below to create a pair of perpendicular lines in the Graphs & Geometry Application ** Perpendicular Lines and Their Slopes The slopes of two perpendicular lines are negative reciprocals of each other**. This means that if a line is perpendicular to a line that has slope m, then the slope of the line is -1 / m. For example, we found that the slope of the line y = (1/2)x + 3 is 1/2 These lines are perpendicular and have negative reciprocal slopes. Another way of saying negative reciprocal is FLIP AND SWITCH, which means to take the slope of the first line, flip the fraction and switch the sign (positive to negative or vice versa). In this case, the green line slope is -(6/7) and the purple line slope is +(7/6

Know the relationship between slopes of parallel lines. Know the relationship between slopes of perpendicular lines. Introduction. This tutorial takes us a little deeper into linear equations. We will be looking at the slope of a line. We will also look at the relationship between the slopes of parallel lines as well as perpendicular lines The relationship between perpendicular lines lies in there slopes. The slope of one line is the opposite reciprocal of the other. Written mathematically, the lines y=m*x +b and y =(-1/m)*x +c are. ** a line has a slope of then the perpendicular slope would be **. The reason for this relationship is a little involved, but the rough idea can be explained with looking at how the slopes of two perpendicular lines would change if you alter the slope of one of the lines. For example, say we had the following perpendicular lines Definition

**The** **slope** **of** a straight **line** **between** two points says (x 1,y 1) and (x 2,y 2) can be easily determined by finding the difference **between** **the** coordinates of the points. The **slope** **is** usually represented by the letter 'm' Correct answer to the question The table shows the proof of the relationship between the slopes of two perpendicular lines. What is the missing statement in step 2? - e-eduanswers.co Two parallel lines won't ever intersect. If two non-vertical lines in the same plane intersect at a right angle then they are said to be perpendicular. Horizontal and vertical lines are perpendicular to each other i.e. the axes of the coordinate plane

What is the relationship between two lines whose slopes are −7 and 1/7? a) The lines are parallel to each other b) The lines are mirror images of each other, reflected over the x-axis c) The lines always cross at the origin. d) The lines are mirror images of each other, reflected over the y-axis. e) The lines are perpendicular to each other The y line is horizontal and x lines are vertical and therefore will be perpendicular to each other. The line y = -7 is a horizontal line running through the y axis at -7. This line has a slope of 0 because it does not rise. Any x = line will run vertically on the coordinate grid and therefore be perpendicular to the y = -7 line BIG IDEA If a line has slope m, any line perpendicular to it has slope - _1 m. If a rotation of magnitude 90º is applied to a line, then the image line is perpendicular to the preimage line. This is true regardless of the center of the rotation, and it explains a very nice relationship between the slopes of perpendicular lines Which statement best explains the relationship between lines AB and CD? They are parallel because their slopes are equal. What is the equation, in point-slope form, of the line that is perpendicular to the given line and passes through the point (2, 5) The slopes of the graphs in each of these cases have a special relationship to each other. Exploring Parallel and Perpendicular Lines . Parallel lines are two or more lines in a plane that never intersect. Examples of parallel lines are all around us, such as the opposite sides of a rectangular picture frame and the shelves of a bookcase.

lines to investigate the relationship between the slopes. 13. What can you say about the slopes of two perpendicular lines? Answer: Students will observe that when one slope is positive, the other slope is negative. They may need to continue exploring to discover that the slopes of the perpendicular lines are the opposite reciprocals of each other The table shows the proof of the relationship between the slopes of two perpendicular lines. What is the missing statement in step 2? Show transcribed image tex

Since our line is perpendicular to a line that has a slope of 2/5, our line has a slope of -5/2 (the negative reciprocal of 2/5). OK, now we have our slope, which is -5/2. Now it is just like problems in Tutorial 26: Equations of Lines , we put the slope and one point into the point/slope equation 6. Move the red line to go through the points (-2,3) and (1,-1). What is the slope of the red line? 7. Does your red line have a positive or negative slope? 8. Move D to any point. Select Show Perpendicular. What is the slope of the new line? Unselect Show Perpendicular 9. Move point D to another point of your choice. Again select Show. What is the relationship between the slopes of parallel lines If m and m' are the slopes of two lines, then. the lines are parallel if m = m' and. the lines are perpendicular if mm' = -1

- Students will be able to discover relationship of slopes between parallel and perpendicular lines. 2. Students will be able to find the fourth coordinate of a parallelogram and a rectangle given three coordinates, using their knowledge of parallel and perpendicular lines.Materials Needed: 1
- A perpendicular is a line that makes an angle of 90 ° with another line. 90 ° is also called a right angle and is marked by a little square between two perpendicular lines as shown in the figure. Here, the two lines intersect at a right angle, and hence, are said to be perpendicular to each other
- Oct 22, 2015 - Explore Nicole Marinucci's board Relationship Between Parallel and Perpendicular Lines on Pinterest. See more ideas about middle school math, education math, teaching math
- 3-8 Slopes of Parallel and Perpendicular Lines. DODEA STANDARD G.4.1: Demonstrate an understanding of the relationship between geometric representation in a coordinate plane and algebraic models of lines and circles; OBJECTIVE To relate slope to parallel and perpendicular lines
- A line perpendicular to another has a slope that is the negative reciprocal of the slope of the other line. In elementary geometry, the property of being perpendicular (perpendicularity) is the relationship between two lines which meet at a right angle (90 degrees). The property extends to other related geometric objects
- the slopes of the lines, a pair of points that lie on each line, the (positive or negative) angles between the lines and the positive -a x i s, a mixture of the above information allowing the slopes of both lines to be found, use the relationship between the slopes of parallel and perpendicular lines to find an unknown slope of a line
- 3. Demonstrate that if the product of slopes of (nonvertical) perpendicular lines is −1, then slopes of perpendicular lines are negative reciprocals. Assessment Questions o Draw a line through the two points D(−2, 3) and E(6, −3). o Find the slope of the line. o Draw a line through F(3, 1) parallel to DE. Show your work , and explain how yo

For lines with positive slopes, the bigger a line's slope, the steeper the line is slanted. As a result, if two lines have the same slope, they are slanted at the same angle, thus they are parallel. Fact 3.8.22 These are called perpendicular lines. The slopes of the graphs in each of these cases have a special relationship to each other. Parallel lines are two or more lines in a plane that never intersect. Examples of parallel lines are all around us, such as the opposite sides of a rectangular picture frame and the shelves of a bookcase..

Conversely, if the slopes of two lines are opposite reciprocals of one another, or the product of their slopes is -1, then the lines are nonvertical perpendicular lines. Because horizontal and vertical lines are always perpendicular, then lines having a zero slope and an undefined slope are perpendicular. Example 1. If line l has slope , the Perpendicular lines are two or more lines that intersect at a 90-degree angle, like the two lines drawn on this graph, and the x and y axes that orient them.. Perpendicular lines are everywhere, not just on graph paper but also in the world around us, from the crossing pattern of roads at an intersection to the colored lines of a plaid shirt

Remember, perpendicular lines have slopes that are opposite reciprocals of each other. In this tutorial, you'll see how to find the slope using the slope of the perpendicular line. Then, use this slope and the given point to write an equation for the line in slope-intercept form. Check it out Consider the line -4x-8y=6. What is the slope of a line parallel to this line? What is the slope of a line perpendicular to this line? Geometry. Which best describes the relationship between the lines with equations -16x+2y=0 and -x-8y=-2? a. neither parallel nor perpendicular b. parallel c. same line d. perpendicular . Geometr What is the relationship between lines p and q? A parallel B perpendicular Parallel and Perpendicular Lines Chapter Test Form B Circle the best answer. Use the figure for Exercises 1 and 2. 1. Classify EH and DH. A skew segments Given a line with a slope of 2, what is the.

* 8*.3.2.1 Understand and apply the relationships between the slopes of parallel lines and between the slopes of perpendicular lines. Dynamic graphing software may be used to examine the relationships between lines and their equations.* 8*.3.2.2 Analyze polygons on a coordinate system by determining the slopes of their sides Connect with This line segment has a slope of -1 and a midpoint at (2, 1). The line of reflection is the perpendicular bisector of this segment. This means it passes through its midpoint and has an opposite reciprocal slope . The line of reflection is the line According to the definition of slope, BM / MA is the slope of line L1 and DN / NC is the slope of L2 and are therefore equal. Questions on parallel lines Question 1 Which of the lines given by the equations a) y = 2 x - 3 b) 2 x - y = 2 c) - 4 y + 2 x = 0 d) - 4 y + 8 x = 9 are parallel Determine the relationship between the two lines. 2x - y = -10 2x + 4y = 2 A. They are parallel. B. They are perpendicular. C. They are neither parallel nor perpendicular. Answer by Fombitz(32379) (Show Source)

- The guided discovery has students use the slider on the Geogebra interactive worksheet to change the slope to specified numbers and record the slope of the corresponding parallel and perpendicular lines. This process repeats until students are able to see a pattern and generalize the relationship of the slopes of lines
- C. The two tracks are perpendicular by the Perpendicular Transversal Theorem. D. The two tracks are parallel by the Converse of the Perpendicular Transversal Theorem. ____ 38. If c ⊥ b and a Ä c, what do you know about the relationship between lines a and b? Justify your conclusion with a theorem or postulate. A. a Ä b, by the Perpendicular.
- This clip discusses the relationship between the slopes of perpendicular lines and how to use that relationship to find an equation
- e the relationship between the slopes of perpendicular lines. These resluts will suggest the following definition. Definition of Perpendicular Lines in a Coordinate Plane: If the product of the slopes of two lines is -1, then the lines are perpendicular. In a plane, vertical lines and horizontal lines are perpendicular

- When two lines are perpendicular to each other (at right angles or 90°), their slopes have a particular relationship to each other. If the slope of one line is m then the slope of the other line is the negative reciprocal of m, o
- • If the product of the slopes of two lines is -1, then the lines are perpendicular. • A horizontal line having zero slope is perpendicular to a vertical line having undefined slope. Two lines that intersect at a right angle (90°) are said to be perpendicular. There is a relationship between the slopes of perpendicular lines. 90
- Perpendicular Line Formula. Linear lines are almost always displayed in the form of . y = mx + b . Where m is the slope and b is the y intercept. The first step in finding the equation of a line perpendicular to another is understanding the relationship of their slopes. The slope of a perpendicular line is always the inverse to the other
- When the slopes of two lines are the negative inverse of one another, they are perpendicular lines. Therefore, the relationship between these two lines is that they are perpendicular. Approved by.
- let's think a little bit about two terms that you will see throughout your geometry and really mathematical career one is the idea of things being perpendicular and usually people are talking about perpendicular actually I'm misspelling it perpendicular perpendicular lines normally perpendicular lines and the idea of parallel lines parallel parallel lines so perpendicular lines are two lines.
- The relationship between perpendicular lines and their slopes is summarized below.These statements will be proved in Lessons 6-6 and 6-7. Quick Check 33 3 EXAMPLE 2 1 2 2 1 2 Quick Check 2 4y 2 12x 5 20 y 5 3x 2 1 y 5 1 4y 5212x 1 20 3x 1 1 y 521 y 5 3x 2 1 3x 2 1 4y 2 12x 5 20 2 EXAMPLEEXAMPLE 12 Slope and Perpendicular Lines

We explain Slope in Perpendicular Lines with video tutorials and quizzes, using our Many Ways(TM) approach from multiple teachers. The relationship between slopes of perpendicular lines is discussed in this lesson Theorem 104: If two lines have the same slope, then the lines are nonvertical parallel lines. If two lines are perpendicular and neither one is vertical, then one of the lines has a positive slope, and the other has a negative slope. Also, the absolute values of their slopes are reciprocals 2) If e equations are perpendicular, they have opposite signs and are reciprocal of each other. For example, if equation 1 has a slope of -2, and equation 2 has a slope of 1/2, these two equations are perpendicular! Equation 1: m = (-2) Equation 2: m = (1/2) Hope this helped you and made sense, Good luck! = Section 3.6 Slopes of Parallel and Perpendicular Lines G.4.1: Demonstrate an understanding of the relationship between geometric representation in a coordinate plane and algebraic models of lines and circles Because of this relationship Figure 1-5.-Slopes of perpendicular lines. Replacing tan a, and tan a Z by their equivalents in terms of slope, we have. We conclude that if two lines are perpendicular, the slope of one is the negative reciprocal of the slope of the other. Conversely, if the slopes of two lines are negative reciprocals of each.

• Understand the difference between parallel and perpendicular lines. • Understand that parallel have slopes that are the same. • Understand why it is that perpendicular slopes are negative reciprocals of each other, and that the product of two perpendicular slopes is -1. • Calculate the point of intersection between two lines Slope and Equations of Lines through Points This Demonstration help students practice determining equations of lines given a pair of points, or the line parallel or perpendicular to a given line through a given point. It also gives students a chance to see the relationships between these lines and points Perpendicular Lines. Perpendicular lines do intersect, unlike parallel lines. Lines intersection forms a 90 o or right angle. 2 lines are Perpendicular when they meet at a right angle (90°). To find a perpendicular slope: When a line has a slope of m, a perpendicular line has a slope of −1/m . In other words the negative reciproca 13. Perpendicular Lines (a) Explain (in English) what it means for two lines to be perpendicular. Be speci c. (b) If two lines are perpendicular, what is the relationship between their slopes? (c) Find the equation of a line perpendicular to the line that passes through ( 2; 1) and (4;3). Note: There are many right answers. b. Given two lines, 1 and 2, with equal slopes and a line that is perpendicular to one of these two parallel lines, 1: i. What is the relationship between line and the other line, 2

** 3**.3 Slopes of Lines Objective: find the slope of a line; use slopes to identify parallel and perpendicular lines • Slope / rate of change Example** 3**-3-1 Determine the slope of each line or the slope of the line containing the given points. Example** 3**-3-2 Justin is driving from home to his college dormitory Remember, **perpendicular** **lines** have **slopes** that are opposite reciprocals of each other. In this tutorial, you'll see how to find the **slope** using the **slope** **of** **the** **perpendicular** **line**. Then, use this **slope** and the given point to write an equation for the **line** in **slope**-intercept form. Check it out

We explore the relationship between slopes of parallel and perpendicular lines. Also, y=mx+b form of a linear equation (slope / y-intercept form) Math and Science lessons from a live classroom. Perpendicular lines have slopes that are opposite reciprocals of each other. To find the slope of a line that is perpendicular to a given equation, find the opposite reciprocal of that slope. Check out this tutorial to learn how Solving Equations Involving Parallel and Perpendicular Lines www.BeaconLC.org©2001 September 22, 2001 4 11. Example - Find the slope of a line perpendicular to the line whose equation is y - 3x = 2. 12. Example - Find the slope of a line perpendicular to the line whose equation is 3x - 7y = 6 * This is the kind of question that is much easier to answer using vectors*. If we have some line mx + b we can parameterize it as (x, y) = t*(1, m) + (0, b). To convince yourself this makes sense, equating these component wise immediately gives [mat.. LINE EQUATIONS IN XY-PLANE Last updated by Joanna Gutt-Lehr, 5/2009, Pinnacle Learning Lab x y x y x y x y VERTICAL LINES: x = constant Slope is undefined. HORIZONTAL LINES: Slope = 0 PARALLEL LINES: Slopes are equal, y-intercepts can be anything. PERPENDICULAR LINES: Slopes are opposite reciprocals, y-intercepts ca

Students will be asked to discover the relationship between the slopes of both parallel and perpendicular lines. The students will use the knowledge discovered and Cabri to find missing coordinates of a parallelogram and the missing coordinate of a rectangle. Keywords: Parallel, Perpendicular, Slope, Cartesian coordinate system NCTM Standard: 1 Perpendicular Lines: The lines are perpendicular if their slopes are opposite reciprocals of each other. Or, if we multiply their slopes together, we get a product of - \,1. These lines intersect at a ninety-degree angle, 90° ** Question 825702: Determine the relationship between the lines that pass through the given points**. Line A (-3,5) and (0,7). Line B (6,2) and (9,4) Are they Perpendicular Parallel Same line No relation Answer by jim_thompson5910(35256) (Show Source)

The slope calculator determines the slope or gradient between two points in the Cartesian coordinate system. The slope is basically the amount of slant a line has, and can have a positive, negative, zero or undefined value. Before we can use the calculator it is probably worth learning how to find the slope using the slope formula Perpendicular generally means when's two lines are at right angles to each other. Orthogonality is a concept that arises in the context of an inner product on a vector space. Two vectors are orthogonal if their inner product is 0. The relationship..

If we multiply the slopes, we get, $$-2 \times \frac{1}{2} = -1.$$ This inverse and negative relationship between slopes is true for all perpendicular lines, except horizontal and vertical lines. Here is another example of two perpendicular lines Step 1 Find an equation of the line perpendicular to the line y = −x + 3 that passes through the point (1, 0). First, fi nd the slope m of the perpendicular line. The line y = −x + 3 has a slope of −1. Use the Slopes of Perpendicular Lines Theorem. −1⋅ m = −1 The product of the slopes of ⊥ lines is −1. Divide each side by m = 1. The second line's equation was y = -2 x + 3, and the line's slope was m = -2.. In both cases, the number multiplied on the variable x was also the value of the slope for that line. This relationship always holds true: If the line's equation is in the form y=, then the number multiplied on x is the value of the slope m

Determine the slope of the line, given the equation of a linear function. Determine the slope of a line, given the coordinates of two points on the line. Determine the slope of a line, given the graph of a line. Recognize and describe a line with a slope or rate of change that is positive, negative, zero, or undefined Perpendicular Line Postulate Perpendicular Line Postulate: For a line and a point not on the line, there is exactly one line perpendicular to the line that passes through the point. There are inﬁnitely many lines that pass through A, but only one that is perpendicular to l. Investigation 3-2: Perpendicular Line Construction; through a Point. Lines F and X are parallel, separated only by a difference of 1. The fraction 6 8 simplifies to 3 4; adding the 1 moves Line X one unit away from Line F.Line O is perpendicular to Lines F and X because it has the negative reciprocal of 3 4.. Transverse Lines or Transversals. Coplanar lines that intersect other coplanar lines are called transverse lines or transversals For lines with positive slopes, the bigger a line's slope, the steeper the line is slanted. As a result, if two lines have the same slope, they are slanted at the same angle, thus they are parallel. Fact 4.8.2 Parallel lines get their own symbol, so it only makes sense that perpendicular lines get their own symbol too. We denote that lines FR and ED are perpendicular by writing FR ⊥ ED . Perpendicular segments also have the peculiar quality of being the shortest distances from any point to another line 19. What best describes the relationship between line 6x - 2y = 1 and line x + 3y = 12? 20. Write an equation of the line with slope = -2 and y-intercept = 5. 21. What is the equation of the line through the point (2, 1) and perpendicular to the line through (-4, 1) and (3, -2)? 22. What is the equation of the line that passes throug