Elimination Method Add and Subtract
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
Solve by elimination:
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
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve by elimination:
x-y=11
2x+y=19
(10,-1)
(-1,10)
(10,-4)
(6,7)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve System of linear equations by using elimination.
2x + 3y = 20
-2x + y = 4
( 4, 2 )
( 6,4)
(1,6)
( 4,6)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve by elimination:
7x - 5y = -24
-9x + 5y = 18
(3, 9)
(-3, -5)
(3, 11)
(3, -11)
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 SELECT QUESTION
1 min • 1 pt
Which operation would allow elimination by either addition or subtraction? (check all that apply---take your time!)
Double the bottom row
Divide the top row by 2
Multiply the bottom row by 4
Multiply the top row by 4
Multiply the top row by 2 and the bottom row by 4
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve the following system of equations using the elimination method:
(-2, 1)
no solutions
(-2, 0)
(-1, -3)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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