1. Finding the Slope of a Line Unit 7.02
Given Two Points
Finding the Slope of a Line Unit 7.02
I can calculate the slope of a line when given 2 points

2. Background Review
In the point (4, 2) the 2 is the ___________. A) x-coordinate B) y-coordinate C) z-coordinate D) Slope ✔

3. Background Review
In the point (-2, 8) the -2 is the ___________. A) x-coordinate B) y-coordinate C) z-coordinate D) Slope ✔

4. Background Review
Which axis is used for the run of a line? A) x-axis B) y-axis C) the equator D) z-axis ✔

5. Background Review
Which axis is used for the rise of a line? A) x-axis B) y-axis C) the equator D) z-axis ✔

6. Slopes should always be represented
What is slope?
Rise
Run
Slope =
Remember:
Slopes should always be represented
as a reduced fraction.

7. The Slope Triangle Rise Run Change in y Change in x Slope = =
To understand the slope formula, we need to look at the slope triangle. From the triangle, we can see we need two points on the line in order to find the slope. The slope is the comparison of the change in y to the change in x.
Rise
Run
Change in y
Change in x
Slope = =

8. “Change” is Subtraction
The term change in math means to subtract.
The slope can also be represented using:
The Slope Formula:

9. Constant Rate of Change
Put it all together!
Unit Rate
Constant Rate of Change
Rise
Run
Change in y
Change in x

10. Setting up the formula
Example: To find the slope of the line passing through the points: (x1, y1) (x2, y2) (3, 2) (5, 8) Let’s set up the formula!

11. Let’s Practice! Find the slope of a line through the points
(2, 3) (5, 8)
Find the slope of a line through the points
(5, 4) (-2, 8) 1) 2)

12. Let’s Practice! Find the slope of a line through the points
(1, -9) (-2, 0)
Find the slope of a line through the points
(1, 3) (-5, -6) 3) 4)

13. Let’s Practice! Find the slope of a line through the points
(2, 6) (-3, 3)
Find the slope of a line through the points
(-3, 4) (0, 3) 5) 6)

14. Let’s Practice! Find the slope of a line through the points
(4,-8) (-1,2)
Find the slope of a line through the points
(5,9) (3,2) 7) 8)

15. I can calculate the slope of a line when given 2 points.
Homework Time! 
More Slope Please! WS
I can calculate the slope of a line when given 2 points.