1. Find the slope between the following points. Use (y2 – y1)/(x2 – x1)
Bell Ringer
Find the slope between the following points. Use (y2 – y1)/(x2 – x1)
1. (2, 5) and (6, 1) (4, 4) and (2, 2)
2. (9, 7) and (-3, -2) (-1, -6) and (-2, -14)

2. Announcements *May 8 – Placement Test and Last Day to turn in work
*Quiz on 8.10 next Wednesday, May 5

3. Homework Check

4. Homework Check

5. Homework Check

6. Section 8.10 Solving Systems of Equation - Graphing
R drive > Key > April 27_May 1 > 4_30__8.10 Systems Graphing File > Save As > P drive > Math > April 27_May 1 >

7. Vocabulary
Systems of Equations – A collection of two or more equations with the same set of variables

8. In the Past… We have found a solution to one equation: Ex) y = x + 3
Now, we will be given more than one equation, and we have to find a solution that works for BOTH equations
Ex) y = 5x y = 2x + 30

9. How can we do this…
There are multiple ways to solve a system of equations.
We will be learning two of those ways, and we are going to start with GRAPHING

10. Let’s Review How to Graph a Line
You need the slope and the y – intercept in order to graph a line:
Step 1 – Plot the y – intercept
Step 2 – Use the slope to plot 2 more points (Remember Rise over Run)
Step 3 – Connect the points with a line

11. Practice Problems Graph the following equations: Y = 3X + 2

12. Example 1 Solve by Graphing
Solve the system of equations by graphing. Y = X Y = -3X + 4

13. Example 2 Solve by Graphing
Solve the system of equations by graphing. Y = X + 2 Y = -2X - 4

14. Example 3 Solve by Graphing
Solve the system of equations by graphing. Y = -X + 5 Y = 2X + 2

15. Example 4 Solve by Graphing
Solve the system of equations by graphing. Y = X + 1 X + Y = 7

16. Homework Section 8.10 # 1, 8 – 10, 13
Solve each system of equations by graphing. 1. Y = -x 8. Y = 2X 9. Y = X 10. Y = -X + 1 Y = X – 4 Y = X + 1 Y = -X + 4 Y = X – X + Y = -3 X – Y = -3