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Solving Systems using Substitution

Authored by Shari England

Mathematics

8th Grade

CCSS covered

Used 19+ times

Solving Systems using Substitution
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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Identify the variable and the equation to isolate to solve the system of equations below.


Equation 1: -4x + y = 6

Equation 2: -5x - y = 21

x in equation 1

y in equation 1

x in equation 2

y in equation 2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Identify the variable and the equation to isolate to solve the system of equations below.


Equation 1: -7x - 2y = -13

Equation 2: x - 2y = 11

x in equation 1

y in equation 1

x in equation 2

y in equation 2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Identify the variable and the equation to isolate to solve the system of equations below.


Equation 1: 3x - 8y = 24

Equation 2: -5x + y = -3

x in equation 1

y in equation 1

x in equation 2

y in equation 2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Identify the variable and the equation to isolate to solve the system of equations below.


Equation 1: x + 3y = 1

Equation 2: -3x -3y = -15

x in equation 1

y in equation 1

x in equation 2

y in equation 2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Identify the variable and the equation to isolate to solve the system of equations below.


Equation 1: -3x - 8y =20

Equation 2: -5x + y = 19

x in equation 1

y in equation 1

x in equation 2

y in equation 2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Identify the variable and the equation to isolate to solve the system of equations below.


Equation 1: -3x + 3y = 4

Equation 2: x - y = -3

x in equation 1

y in equation 1

x in equation 2

y in equation 2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

What can you tell from just looking at these equations?

They have different y-intercepts, so this system has 1 solution
Both equations have 4x, so this system has infinitely many solutions
Both equations have a y, so they'll cancel each other out
Both equations have the same slope, so they are parallel

Tags

CCSS.8.EE.C.8B

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