
Elimination Quiz
Authored by Cortney Strickland
Mathematics
9th Grade
CCSS covered

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8 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Solve the System by Elimination
x - y = 11
2x + y = 19
(10,-1)
(-1,10)
(3,-4)
(6,7)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What would be the first step in finding the solution using elimination?
2x + 2y = -2
3x - 2y = 12
you cannot solve this system using elimination
cross out the 2x and 3x
Add the opposite like terms. The y terms will cancel out.
change to slope intercept form and graph
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What do you get when you add the system below?
9x + y = 12
-9x + y = 6
-18x = 18
y = 18
2y= 18
18x + 2y = 18
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Should you Add or Subtract to eliminate a variable in the equations below?
2x - 6y = 20
2x + 5y = -11
Subtract
Add
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Solve by elimination
-2x + 6y = 16
-4x - 3y = 2
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
After solving algebraically, how can you check your answers?
Plug x and y back into both your equations and see if they "check out"
graph the lines in desmos and see where they intersect
all of the above
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
When doing elimination, select the steps that are used. (you can choose more than one)
Make sure the equations are lined up.
Go for a run.
Add or Subtract to eliminate a variable.
Solve for the remaining variable.
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