Elimination Systems Problems
Authored by Anthony Clark
Mathematics
9th Grade
10 Questions
CCSS covered
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A variable needs to be eliminated to solve the system of equations below. Choose the correct first step.
8x + 9y = -24
-8x − y = 16
Add to eliminate x
Add to eliminate y
Subtract to eliminate x
Subtract to eliminate y
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A variable needs to be eliminated to solve the system of equations below. Choose the correct first step.
4x + 9y = 1
4x − 7y = 11
Add to eliminate x
Add to eliminate y
Subtract to eliminate x
Subtract to eliminate y
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A variable needs to be eliminated to solve the system of equations below. Choose the correct first step.
-8x + 6y = 12
-8x − 7y = 1
Add to eliminate x
Add to eliminate y
Subtract to eliminate x
Subtract to eliminate y
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
4x+8y=20
-4x+2y=-30
(-7,1)
(2,-5)
(-2,5)
(7,-1)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the solution to this system of equations?
(2,-2)
(1,2)
( 1/2 , 4 )
(-2,2)
(2, 4)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve by elimination
2x + 9y = -7
6x - 3y = 9
(-1, -1)
(2,-1)
(1,1)
(1,-1)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve the system by elimination.
5x + 8y = -12
3x + 5y = -7
(1, -10)
No solution
(-4, 1)
(1, 10)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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