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Solving Systems by Elimination

Authored by Charles Hoffman

Mathematics

9th - 11th Grade

CCSS covered

Used 6+ times

Solving Systems by Elimination
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22 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in solving a system of equations by elimination?

Get both equations in standard form and line up the like terms.
Get both equations in slope-intercept form.
Get both equations equal to zero.
Put the x terms first.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Solve by elimination:
4x + 9y = 28
-4x - y  = -28

(-7,0)
(6,0)
(-6,0)
(7,0)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

3.

MULTIPLE CHOICE QUESTION

5 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

5 mins • 1 pt

Solve by elimination:
7x + y = -9
-3x - y = 5

No solution
(1,8)
(-2,-3)
(-1,-2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

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

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

4x +  8y = 20
-4x + 2y = -30
Which variable will be eliminated?

The  x
The  y
The  z
The unknown

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

-4x - 2y = -12
4x + 8y = -24

(5,6)
(6,-6)
(6,-2)
(4,-3)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

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