1. m = 1 undefined Warm up Find the slopes of the following points:
1. (2, 6) and (4, 8)
2. (2, -3) and (5, -1)
3. (4, 3) and (4, 8)
m = 1
undefined

2. Questions over hw?

3. Identify the slope and the y-intercept
y = x – 4
m = 1
b = -4

4. Identify the slope and the y-intercept
m = -5/7
b = 0

5. Identify the slope and the y-intercept
y = 3x + 12
m = 3
b = 12

6. Identify the slope and the y-intercept
3x + 2y = 6
m = -3/2
b = 3

7. Identify the slope and the y-intercept
m = 0
b = -12

8. Identify the slope and the y-intercept
14x – 7y = -28
m = 2
b = 4

9. Identify the slope and the y-intercept
x = 8
m = undefined
b = none

10. Identify the slope and the y-intercept
m = -1/4
b = 3

11. Identify the slope and the y-intercept
m = 4
b = -3

12. Identify the slope and the y-intercept
m = -1/2
b = 0

13. Daily Check

14. Parallel Lines Graphs: Lines NEVER intersect Equations: Same Slopes
Different y-intercepts

15. Perpendicular Lines Graphs: Lines intersect at 90º Equations:
Opposite Reciprocal Slopes
With the same or different y-int

16. “Neither” Graphs: intersect, but not at 90º Equations:
NOT the same slope and are NOT opposite reciprocal slopes

17. Are these lines parallel, perpendicular, or neither?
y = 3x – 8
y = 3x + 2
parallel

18. Are these lines parallel, perpendicular, or neither?
y = -5x – 23
y = 5x – 16
Neither

19. Are these lines parallel, perpendicular, or neither?
x = 7
x = -1
parallel

20. Are these lines parallel, perpendicular, or neither?
y = -2x – 4
perpendicular

21. Are these lines parallel, perpendicular, or neither?
y = -2x + 1
y = -2x – 4
y = 3x – 4
y = -3x + 1
y = 1/5 x + 2
y = -5x + 6
parallel
neither
perpendicular

22. Are these lines parallel, perpendicular, or neither?
4. y = -2x + 1
y = -1/2x – 4
5. y = 3x – 4
y = 1 + 3x
6. y = 5/6 x + 2
y = -6/5 x + 6
neither
parallel
perpendicular

23. Comparing Slopes Worksheet

26. Finish the ws for homework