Systems - Substitution

Systems - Substitution

8th Grade

10 Qs

quiz-placeholder

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Systems - Substitution

Systems - Substitution

Assessment

Quiz

Mathematics

8th Grade

Practice Problem

Medium

CCSS
7.EE.B.4A, 8.EE.C.8B, 6.EE.A.2C

+3

Standards-aligned

Created by

Jillian Garzel

Used 12+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What does it mean to substitute?

to add different variables together and see what you get

to graph and find the intersection

guess and check

to replace the value of a variable with an equivalent expression

Tags

CCSS.6.EE.A.2C

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which one shows the correct substitution for the system?

y = 2x + 1

2x - 3y = 7

2(2x + 1) - 3y = 7

2x - 3(2x + 1) = 7

y + 2x - 3y = 8

2x - 2x + 1 = 7

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Simplify.

2x - 3(2x + 1) = 7

2x - 6x - 3 = 7

2x - 5x + 1 = 7

2x - 6x + 3 = 7

2x - 2x -3 = 7

Tags

CCSS.6.EE.A.3

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Simplify.

2x - 6x - 3 = 7

-7x = 7

4x + 3 = 7

8x - 3 = 7

-4x - 3 = 7

Tags

CCSS.7.EE.B.4A

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Solve.

-4x - 3 = 7

x = -2.5

x = -40

x = 0.4

x = -1

Tags

CCSS.7.EE.B.4A

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If x = -2.5 what does y equal?

y = 2x + 1

2x - 3y = 7

y = 0.75

y = -4

y = 5.5

y = 9

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which one shows the correct substitution for the system?

x = 7 + y

y = 7 - 2x

x = 7 + (7 - 2x)

y = 7 - 7 + y

x = 7 + 7

7 + y = 7 - 2x

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

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