Elimination
Authored by Barbara White
Mathematics
8th - 9th Grade
CCSS covered
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10 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Solve the system by elimination. Show all work.
3x + y = 19
2x - y = 6
(5, 14)
(4, 5)
(5, 4)
(14, 5)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Solve the system by elimination. What will you use as a multiplier and on which equation? Show all work.
x + 6y = 17
x - 3y = 8
(5, 2)
(11, 1)
(1, 11)
no solution
Tags
CCSS.8.EE.C.8B
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Solve by 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
15 mins • 1 pt
What would be the first step in finding the solution using elimination?
2x + 2y = -2
3x - 2y = 12
you cannot solve this using elimination
cross out the 2x and 3x
Add the like terms. The y terms will zero out.
change to slope intercept form and graph
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Solve the system. You could use elimination OR substitution. Show work.
4x + 5y = 5
x = -10y + 3
( 1 , 5 )
( 0.2 , 1 )
No Solution
( 1 , 1/5 )
Tags
CCSS.8.EE.C.8B
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
what is the variable that willl be "eliminated"?
5x - 4y = 11
5x + 4y = -14
x variable
y variables
both variables
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
what is the resulting combined equation to the following system:
5x - 4y = 11
5x + 4y = -14
5x = -3
10y = -3
10x = -3
10x = -25
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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