1. Bellringer

3. Bellringer

4. Parallel and Perpendicular Lines
Chapter 6: Section 5
Parallel and Perpendicular Lines

5. Parallel Lines Lines in the same plane that never intersect
Nonvertical lines are parallel if they have the same slope and different y-intercepts.
Any two vertical lines are parallel.

6. Example 1
Check to see if the equations are parallel.

7. Example 2
Write and equation for the line that contains (5, 1) and is parallel to
point
m, slope

8. Perpendicular Lines Lines that intersect to form right angles
Two lines are perpendicular if their slopes are negative reciprocals. Their product is -1.
Vertical and horizontal lines are perpendicular.

9. Example 3
Check to see if the equations are perpendicular.

10. Example 4
Write and equation for the line that contains (0, -2) and is perpendicular to
point
m, slope

11. Your Assignment
Page 314
#’s 4-40 multiples of 4
#31
#42