Download presentation

1
**4.4 Parallel and Perpendicular Lines**

Objective:Write an equation of the line that passes through a given point parallel or perpendicular to a given line

2
**What do we Already Know? Write Equations in Slope-Intercept Form**

Write Equations in Point-Slope Form Find the Slope of a Line

3
What we will Know? How to write an equation of a line that passes through a given point parallel or perpendicular to a given line.

4
PARALLEL LINES Do not intersect in the same plane Have the same slope

5
Write an equation in slope-intercept form for the line that passes through (-3,5) and is parallel to the graph of y=2x-4

7
Write an equation in slope-intercept form for the line that passes through (4,-1) and is parallel to the graph of y=(1/4)x+7

9
Write an equation in slope-intercept form for the line that passes through (0,3) and is parallel to the graph of y= -4x+5

11
**Perpendicular Lines Lines that intersect and form right angles**

Slopes are opposite reciprocals Ex. m= 4 then the slope of the line that is perpendicular to m= 4 is –1 4

13
Write an equation in slope-intercept form for the line that passes through (-4,6) and is perpendicular to the graph of 2x+3y=12

14
Write an equation in slope-intercept form for the line that passes through (4,7) and is perpendicular to the graph of y=2x-1 3

15
Write an equation in slope-intercept form for the line that passes through (2,3) and is perpendicular to 2x+3y=4

16
Journal Page 242 #45 Is a horizontal line perpendicular to a vertical line sometimes, always, or never? Explain your reasoning

17
**Determine by graphing whether y=5, x=3 and y=-2x+1 are parallel or perpendicular**

Similar presentations

© 2022 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google