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Elimination Method by Add or Sub

Authored by Anthony Clark

Mathematics

9th Grade

CCSS covered

Elimination Method by Add or Sub
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19 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Solve for x

Hint: Solve using Elimination Method:

1/2

1

-1

-1/2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Solve using Elimination Method:


x - y = 11

2x + y = 19

(10,-1)

(-1,10)

(3,-4)

(6,7)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Solve the system:

x + 6y = 17

-x + 3y = -8

(5, 2)

(11, 1)

(1, 11)

no solution

Tags

CCSS.8.EE.C.8B

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What should you multiply the TOP equation by so that the x's will cancel out?

-2

2

3

-3

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

6.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

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

1 min • 1 pt

What would the top equation become when you multiply everything by -1?

2x - 6y = 20

-2x - 6y = -20

-2x + 6y = 20

-2x + 6y = -20

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

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