Solving Systems by Elimination

Authored by Alicia Edwards

Mathematics

8th - 9th Grade

CCSS covered

Used 21+ times

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7 questions

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MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Solve by elimination:
$4x+9y=28$
$-4x-y=-28$

(-7,0)

(6,0)

(-6,0)

(7,0)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Solve by elimination:

$3x+7y=23$
$-3x-7y=-17$

No solution

ARN

(1,3)

(3,3)

Tags

CCSS.8.EE.C.8B

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

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Solve by elimination

$-12x-10y=0$
$6x+5y=-1$

infinite solutions

(0,0)

no solution

(2,1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

MULTIPLE CHOICE QUESTION

3 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

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Solve by elimination
$x+y=-5$
$x-y=7$

(1, 6)

no solution

(0, -2)

infinite solutions

Tags

CCSS.8.EE.C.8B

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Solve the system by elimination.
$3x+2y=16$
$7x+y=19$

(-2, 5)

(-2, -5)

(2 ,-5)

(2 ,5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

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Solving Systems by Elimination

Solve by elimination: 4x+9y=284x+9y=284x+9y=28 −4x−y=−28-4x-y=-28−4x−y=−28

Solve by elimination: 3x+7y=233x+7y=233x+7y=23 −3x−7y=−17-3x-7y=-17−3x−7y=−17

Solve by elimination: 7x+y=−97x+y=-97x+y=−9 −3x−y=5-3x-y=5−3x−y=5

Solve by elimination −12x−10y=0-12x-10y=0−12x−10y=0 6x+5y=−16x+5y=-16x+5y=−1

Solve by elimination 2x+9y=−72x+9y=-72x+9y=−7 6x−3y=96x-3y=96x−3y=9

Solve by elimination x+y=−5x+y=-5x+y=−5 x−y=7x-y=7x−y=7

Solve the system by elimination. 3x+2y=163x+2y=163x+2y=16 7x+y=197x+y=197x+y=19

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Solve by elimination:
$4x+9y=28$
$-4x-y=-28$

Solve by elimination:

$3x+7y=23$
$-3x-7y=-17$

Solve by elimination:

$7x+y=-9$
$-3x-y=5$

Solve by elimination

$-12x-10y=0$
$6x+5y=-1$

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

Solve by elimination
$x+y=-5$
$x-y=7$

Solve the system by elimination.
$3x+2y=16$
$7x+y=19$