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g8 elimination

Authored by Sara Alfahel

Mathematics

8th Grade

CCSS covered

Used 2+ times

g8 elimination
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11 questions

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1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

4x +  8y = 20
-4x + 2y = -30
Which variable will be eliminated?

The  x
The  y
The  z
The unknown

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Solve by elimination:
4x+4y=4

3x+4y=10

(7,-6)
(-6,7)
(6,7)
(7,6)

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Solve by elimination:

3x+7y=23


-3x-7y=-17

No solution

(0, 3)

(-3,3)

(3,3)

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What would be the first step in finding the solution with elimination?

4x + 3y = 1

x - 3y = -11

cross out the 3y and -3y

cross out the 4x and x

change all the signs of the second equation

add 1 and -11

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A ________________ is a set of two or more equations that have the same variables.

solution of a system
elimination method
system of equations
table

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Identify the solution to this system of equations.

(4, -1)
(-1, 4)
(-4, 1)
(-4, -1)

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which variable will be eliminated?

x

y

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