Add/Subtract Elimination
9th Grade
•15 Qs
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Add/Subtract Elimination
Quiz
•
Mathematics
•
9th Grade
•
Hard
Standards-aligned
Anthony Clark
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
7x - y = 10
-7x + y = -14
No Solution
(4, 1)
Infinitely Many Solutions
(2, -4)
Answer explanation
7x - y = 10
-7x + y = -14
All of the like terms have opposite coefficients, so both variables will be eliminated when we add the equations together. We cannot eliminate one without the other.
We are left with:
0=-4
This is a contradiction (false), so there is NO SOLUTION.
Tags
CCSS.8.EE.C.8B
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve the following using elimination. x-y=11 2x+y=19
(10,-1)
(-1,10)
(-1,-10)
(-10,-1)
Answer explanation
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In order to solve this system by elimination, what should your first step be?
Add the system
Subtract the system
Multiply one equation by 4
Multiply one equation by 5
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In order to solve this system by elimination, what should your first step be?
Add the system
Subtract the system
Multiply one equation by 4
Multiply one equation by 2
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In order to solve this system by elimination, what should your first step be?
Add the system
Subtract the system
Multiply one equation by 5
Multiply one equation by 7
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In order to solve this system by elimination, what should your first step be?
Add the system
Subtract the system
Multiply one equation by 8
Multiply one equation by 2
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In order to solve this system by elimination, what should your first step be?
Add the system
Subtract the system
Multiply one equation by 3
Multiply one equation by 5
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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