1. 3.2 Solving Systems by Elimination
Learning Objective: to solve systems using elimination
Warm-up (IN)
1. Simplify.
No HW/INB check this week!
15y
11x
-4x+5y
-x+4y
17x-20y

2. ***To solve systems by elimination:
1 – line up like terms on top of each other
2 – multiply one, or both, of the equations so that one variable will cancel
3 – add the equations vertically
4 – Solve for the remaining variable
5 – plug that value back into either of the original equations to find the other variable

3. -4 ( ) EX 1 – Solve by linear combination:
Always write solution as an ordered pair!!!

4. ( 3 )

5. 5 ( ) 2 ( )

6. No solution! -4 ( )
All real #s

7. EX 2 – #40 on page 170 -2 ( )
POINT CHALLENGE!
Try this… page 168

8. Out – Explain how to use elimination to solve the system
Summary – Wow,
I remember…
HW – p #9-33 (mult of 3), 39,44, 45,47-62