Solving Systems by Elimination and Subtraction
Authored by Anthony Clark
Mathematics
9th Grade
CCSS covered
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve the system by elimination.
−8x − 10y = 20
−8x − 6y = −4
Infinite number of solutions
(6, 5)
(−6, −5)
(5, −6)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve the system
-4x - 2y = -12
4x + 8y = -24
(6, 0)
( 6 , -6 )
( -6 , 6 )
( 3 , -3 )
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve the following using elimination.
-9x-4y=-20
5x+4y=4
(-4,4)
(4,4)
(4,-4)
(-4,-4)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve the system of equations.
x + 5y = -27
2x + 5y = -24
(3, 6)
(-3, -6)
(-3, -4)
(3, -6)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve for x and solve for y
3x - 3y = 33
6x - 3y = 57
(8,-3)
(-3,8)
(10,1)
(10,-1)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve for x and solve for y
3x - 3y = 33
x - y = 11
no solution
infinitely many solutions
(11, 0)
(-11, 22)
Tags
CCSS.8.EE.C.8B
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When using elimination to solve this system, which operation should be used to eliminate the x?
4x + 3y = 24
4x - 6y = 18
Addition
Subtraction
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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