1. Objective - To find the slope of a line.
The rate of change that determines the
direction of a line and how steep it is. y x
vertical change
Slope =
horizontal change +2 y
Slope = +3 x -6
rise
Slope =
run -4 +3 3 2 =
Slope = m = +2 -6 3
m = = -4 2

2. Find the slope of the line below.x y
Slope =
rise
run +1
Slope = +4 +4
m = 1 4 +1 -2 -2 = 1 4 -8
m = -8

3. Find the slope of the line below.x y
Slope =
rise
run +1 +3
Slope = +3 +1
m = 3

4. Find the slope of the line below.x y
Slope =
rise
run -2 -2
Slope = +3 +3
m = 2 3

5. Find the slope of the line below.x y
Slope =
rise
run -2
Slope = +1
m = -2 -2 +1

6. Find the slope of the line below.x y +4
Slope =
rise
run +3 +3
Slope = +4
m = 3 4

7. Find the slope of the line below.x y
Slope =
rise
run -1 +2 -1
Slope = +2
m = 1 2

8. y
rise
run x
Slope =
rise
run
Slope Formula

9. Use the slope formula to find the slope between the given points.1 2 1 2
1) (2, 5) (6, 9)
2) (-3, 7) (5, -5)

10. Use the slope formula to find the slope between the given points.2 1 1 2
3) (6, 1) (-3, 4)
4) (3, -2) (6, 8)

11. Use the slope formula to find the slope between the given points.1 2 1 2
(-2, 4) (3, 4)
(2, -1) (2, 5)
m = undefined y x
m = 0
All horizontal lines
have slope = 0
All vertical lines
have undefined slope
“zero slope”
“no slope”

12. Positive Slope vs. Negative Slopex y
m = 0
m = undefined

13. Slope as a Rate of Change
The graph below represents Joe’s drive to work.
Describe what happens during each segment. J
Distance
from
home D C E F H A B G I
Time