Systems Elimination Strategy
Authored by Anthony Clark
Mathematics
9th Grade
CCSS covered
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19 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If you add these equations together which variable is going to eliminate?
x
y
4
Answer explanation
-4x + 4x = 0x = 0
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
To eliminate the y variable, . . .
multiply the top equation by 1
multiply the bottom equation by 3
multiply the bottom equation by -3
multiply the top equation by 4
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve this system by elimination
(0,2)
no solution
(2,0)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
4.
MULTIPLE SELECT QUESTION
1 min • 1 pt
To solve this by elimination, which of the follow answer choices show an accurate strategy that will eliminate a variable.
Multiply the top equation by -3 and then add the equations together.
multiply the top equation by -3 and multiply the bottom equation by +5. Then, add the equations together.
multiply the top equation by +9 and multiply the bottom equation by -4. Then, add the equations together.
multiply the top equation by 9 and multiply the bottom equation by 4. Then, add the equations together.
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve using Elimination Method:
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
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
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
7.
MATH RESPONSE QUESTION
1 min • 1 pt
Solve for x.
(just the number)
Mathematical Equivalence
OFF
Tags
CCSS.HSA.REI.C.9
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