Elimination Systems What to Multiply

Elimination Systems What to Multiply

9th Grade

11 Qs

quiz-placeholder

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Elimination Systems What to Multiply

Elimination Systems What to Multiply

Assessment

Quiz

Mathematics

9th Grade

Hard

CCSS
HSA.REI.C.6, 8.EE.C.8B

Standards-aligned

Created by

Anthony Clark

FREE Resource

11 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the proper set up to solve the equation?

-7x -2y= -13

x = 2y+11

-7(11) -2y = -13

-7(2y +11)-2y = -13

-7x -2(11) =-13

-7x - 2(2y+11)= -13

Tags

CCSS.HSA.REI.C.6

CCSS.8.EE.C.8B

2.

MULTIPLE CHOICE QUESTION

1 min • 12 pts

Solve the system:

x+ 3y = 9

2x+ y = −2

(3,2)

(-2, 2)

(3, -4)

(-3, 4)

(0.5, -3)

Tags

CCSS.HSA.REI.C.6

CCSS.8.EE.C.8B

3.

MULTIPLE CHOICE QUESTION

1 min • 12 pts

Solve for x and y
3x + 2y = 16
7x + y = 19

(-2,5)

(-2,-5)

(2,-5)

(2,5)

Tags

CCSS.HSA.REI.C.6

CCSS.8.EE.C.8B

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

To eliminate the x variables

multiple the top equation by -1

multiply the bottom equation by 4

multiply the bottom equation by -4

multiply the bottom equation by -1

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

5.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Media Image

To solve this by elimination, which of the follow answer choices show an accurate strategy that will eliminate a variable.

Multiply the top equation by -3 and then add the equations together.

multiply the top equation by -3 and multiply the bottom equation by +5. Then, add the equations together.

multiply the top equation by +9 and multiply the bottom equation by -4. Then, add the equations together.

multiply the top equation by 9 and multiply the bottom equation by 4. Then, add the equations together.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

If you add these equations together which variable is going to eliminate?

x

y

4

Answer explanation

-4x + 4x = 0x = 0

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

After you eliminate the x variables, you can solve for y.  Do it! What do you get?

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

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