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Solving Systems by Elimination

Authored by Donna Bussey

Mathematics

9th - 12th Grade

CCSS covered

Used 6+ times

Solving Systems by Elimination
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10 questions

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1.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

When you substitute x=2 into the TOP equation, what would the substitution look like? *no spaces*

2x + 2y = -2

3x - 2y =12

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

2.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

What is the value of x, after you eliminate y's

2x + 2y = -2

3x - 2y =12

Answer explanation

5x = 10

divide both sides by 5

x=2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

3.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Solve the system by elimination. *no spaces*

-4x - 2y = - 12

4x + 8y = - 24

Answer explanation

Media Image

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

4.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Solve the system by elimination. *no spaces*

-3x - 3y = 12

-9x + 3y= -24

Answer explanation

Media Image

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

5.

MULTIPLE CHOICE QUESTION

2 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

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Solve by elimination
4x-6y= -6
-2x-12y= -12

(0,1) 
(1,0)
(1,1)
(2,1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Solve by elimination 
2x+9y= -7 
6x-3y= 9 

(-1, -1) 
(2,-1)
(1,1)
(1,-1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

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