Warm-Up
Solve the following system by
graphing.
x+2y=8
-2x+y=9
Show any work you did to help
you graph!
1
Three friends go out to eat during summer vacation. Conrad
offers to get 2 slices of pizza for Andrea, and Jenna offers to
get a drink for Andrea, while Andrea looked for a table where
they could sit together.
Prices were not posted at the small pizza stand, but Conrad was
charged $10.50 for 4 slices of pizza and 1 large drink, and
Jenna was charged $7.50 for 2 slices of pizza and 2 large
drinks. Andrea wanted to pay her friends for the food they got
her. Write a system of equations representing the above
situation.
2
Solving Systems with Elimination
Step 1: _________ one or both equations by a value that will allow you to ________ a variable once the equations are ______. Step 2: ______ the two equations
Step 3: _______ for the variable that is left.
Step 4: ________ your value from step 3 into one of the ________ equations to solve for the other variable. 3
Solve the following system using elimination:
4
5
2)
6
4)
7