Elimination Add or Subtract

Elimination Add or Subtract

9th Grade

15 Qs

quiz-placeholder

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Elimination Add or Subtract

Elimination Add or Subtract

Assessment

Quiz

Mathematics

9th Grade

Practice Problem

Hard

CCSS
8.EE.C.8B, 6.EE.B.7, HSA.REI.C.6

Standards-aligned

Created by

Anthony Clark

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Solve the system by elimination.
−8x − 10y = 20
−8x − 6y = −4

Infinite number of solutions  

(6, 5) 

(−6, −5) 

(5, −6) 

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Solve by elimination

-6x + 5y = 1

6x + 4y = -10

(-1,7/5)

(0,-1)

(1,1)

(-1,-1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

3.

MULTIPLE CHOICE QUESTION

1 min • 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

1 min • 1 pt

Solve by elimination:

7x + y = -9

-3x - y = 5

No solution

(1,8)

(-1,-3)

(-1,-2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

5.

OPEN ENDED QUESTION

1 min • 1 pt

How do you know if you should ADD or SUBTRACT the two equations?

Evaluate responses using AI:

OFF

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Consider the system of equations:

6x-10y=2

6x+2y=24

Should we add or subtract to eliminate a variable?

ADD, because the 6s have the same sign

SUBTRACT, because the 6s have the same sign

ADD, because the 6s have OPPOSITE signs

SUBTRACT, because the 6s have opposite signs

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Consider the system of equations: 2x+4y=10 12x-4y=20 Should we add or subtract to eliminate a variable?

ADD, because the 4s have the same sign

SUBTRACT, because the 4s have the same sign

ADD, because the 4s have OPPOSITE signs

SUBTRACT, because the 4s have opposite signs

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

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