Plugging Into Equations
Quiz
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
Standards-aligned
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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