1. Warmups Graph y = -3 Graph y = 2x - 4
Write an equation in standard form: (2,-2) (1,4)
Parallel, Perpendicular or neither?

2. Objective: To write an equation of a line perpendicular to another
Perpendicular Lines
Objective: To write an equation of a line perpendicular to another

3. Perpendicular Lines
How will yesterday change if we want the lines to be perpendicular??
The slope will be opposite sign & reciprocal!!!!
Write an equation in slope-intercept form that passes through the given point and is perpendicular to the given line.
Example 1: (0,4)

4. Example 2
Write an equation in SLOPE-INTERCEPT form that passes through the given point and is perpendicular to the given line.
y = 2x - 5 (6,4)

5. Example 3
Write an equation in SLOPE-INTERCEPT form that passes through the given point and is perpendicular to the given line.
2x – 3y = 9 (0,2)

6. TOO
5x + 4y = 8 (10,5)
y = 1/4x – 4 (-2,3)
14x + 2y = 4 (6,4)

7. Homework
Pg. 367 # 33-45

8. Math Lab Warmups Graph x = 4 Graph y = -2x + 3
Write an equation in standard form: (1,8) (-2,3)
Parallel, Perpendicular or neither?

9. Speaker and Scribe: 1 board 1 marker 1 sock
Review Chapter 6 part 2
Speaker and Scribe:
1 board
1 marker
1 sock

10. Determine the slope of the line:

11. Find the Slope

12. Write in STANDARD

13. Write in POINT-SLOPE

14. Find x and y intercepts

15. Find slope and y-intercept

16. Parallel, perp. Or neither?

17. Write an equation in slope intercept form of a line that passes through the given point and is parallel to the given line

18. Write an equation in slope intercept form of a line that passes through the given point and is perpendicular to the given line

19. Determine Value of r.