Plugging Into Equations

Plugging Into Equations

8th Grade

10 Qs

quiz-placeholder

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Plugging Into Equations

Plugging Into Equations

Assessment

Quiz

Mathematics

8th Grade

Practice Problem

Hard

CCSS
8.EE.C.8B, 8.EE.C.8C, HSA.REI.C.6

Standards-aligned

Created by

Anthony Clark

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Solve the following systems of equations using substitution:


x = 6

y = 2x - 3

(6, 6)

(6, 9)

(9, 6)

(9, 9)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

2.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

Solve the system by substitution.
 

5x + 4y= −14
y =  −7x  −  15 

(-2, -1)

(1, -2)

(-2, 1)

(-1, -2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Solve the system of equations using substitution:
x = -1
y = 3x + 2

(1, 1)

(2, -1)

(-1, -1)

(-1, 2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

At what point would the following lines intersect at (use graph paper to help):

y=-3x+2

y=2x-3

(1,-1)

(2,3)

(-3,5)

(2,6)

Tags

CCSS.8.EE.C.8B

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

At what point would the following lines intersect at (use graph paper to help): 2y+x=14 y=3x

(1,-1)

(2,3)

(-3,5)

(2,6)

Tags

CCSS.8.EE.C.8B

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

At what point would the following lines intersect at (use substitution to solve): 2y=3x+12 y=5x-1

(2,9)

(-1,-2)

(-10,5)

(2,2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Sam owns a pet store. He bought 12 bags of dog food and 8 bags of cat food for $101. Two weeks later, Sam bought 9 bags of dog food and 11 bags of cat food for $99.50.

Select the system of equations below that fits this situation best:

12d+8c=$99.50

12d+11c=$101

12d+8c=$101

12d+11c=$99.50

20dc=$101

20dc=$99.50

12c-8d=$101

12c-11d=$99.50

Tags

CCSS.8.EE.C.8C

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