Systems of Equations by Elimination
Authored by Anthony Clark
Mathematics
9th Grade
CCSS covered
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
4x+ 9y = 28
-4x -y = -28
(-7,0)
(6,0)
(-6,0)
(7,0)
(6,7)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
MULTIPLE CHOICE QUESTION
1 min • 12 pts
Solve using Elimination Method:
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
3.
MULTIPLE CHOICE QUESTION
1 min • 12 pts
Solve the system:
x + 6y = 17
-x + 3y = -8
(5, 2)
(11, 1)
(1, 11)
no solution
Tags
CCSS.8.EE.C.8B
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
−4x − 4y = 0
4x + 4y = 0
(−6, −4)
Infinite number of solutions
No Solution
(6, 4)
(0,0)
Tags
CCSS.8.EE.C.8B
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Say you wanted to eliminate x from the system shown. How would you do it?
Add the equations without doing any multiplication.
Multiply the first equation by 2 and the second equation by 3, then add the equations.
Multiply the first equation by negative 2 and the second equation by 3, then add the equations.
Multiply the first equation by 3 and the second equation by negative 2, then add the equations.
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
OPEN ENDED QUESTION
1 min • 1 pt
Solve the system using elimination.
Evaluate responses using AI:
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7.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Which of the following could be a correct first step in solving the system shown? Select all that apply.
Multiply the first equation by 2, then add the result to the third equation.
Multiply the second equation by 2, then add the result to the third equation.
Add the first and second equation.
Add the first and third equation.
Add the second and third equation.
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