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Elimination by multiplication

Authored by Salwa El Demerdash

Mathematics

8th Grade

CCSS covered

Used 15+ times

Elimination by multiplication
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10 questions

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1.

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

2.

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

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Solve by elimination:
-x+2y=17

2x+2y=-10

ARN
(-9,4)
(-9,-4)
(9,-4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

4.

MULTIPLE CHOICE QUESTION

3 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

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Solve by elimination 
-6x+y= -2
-3x-6y= 12

(2,0)
no solution 
(0,-2)
infinite solutions 

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Solve the system using Multiplication. 
2x + 3y = 12
5x - y = 13

x = -3, y = -2
x = 1.5, y = 2
x = 6, y = 0
x = 3, y = 2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What is the solution to this system?
y = 2x + 1
y = 4x - 1

(1,3)
(-1,-3)
(-1,3)
(3,1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

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