Solving Equations by Substitution
9th Grade
•11 Qs
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Quiz # 4 Topic 10 and 11
9th Grade
•10 Qs
Solving Equations by Substitution
Quiz
•
Mathematics
•
9th Grade
•
Hard
+1
Standards-aligned
Anthony Clark
FREE Resource
11 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A large pizza at Palanzio’s Pizzeria costs $6.80 plus $0.90 for each topping.The cost of a large cheese pizza at Guido’s Pizza is $7.30 plus $0.65 for each topping. Which system of equations could be used to find the number of toppings when both companies cost the same amount?
y = 6.80 + .65x
y = 7.30 + .90x
x + y = 6.80
x + y = 7.30
y = 6.80 + .90x
y = 7.30 + .65x
y + .90x = 6.80
y + .65x = 7.30
Tags
CCSS.HSA.CED.A.3
2.
MULTIPLE CHOICE QUESTION
1 min • 12 pts
Dustin and his workout partner are lifting weights together, doing many sets of each exercise. On a certain exercise, Dustin is using a 35-kilogram bar, increasing the amount of weight he lifts by 3 kilograms on each set. His partner, meanwhile, started out using a 40-kilogram bar and is upping the weight by adding 2 kilograms on every set. Eventually, Dustin and his workout partner will be lifting the same amount, and will take turns using the same barbell. How much weight will they be lifting then? Write a system of equations in order to find the solution.
75 kilograms
5 kilograms
50 kilograms
80 kilograms
Tags
CCSS.8.EE.C.8C
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve for x and y
y = 2x + 1
y = 4x - 1
(1,3)
(-1,-3)
(-1,3)
(3,1)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
y = -6x + 5
-2x + y = 5
(-3, -6)
(-6, 3)
(0, 5)
(-3, 5)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve the system by substitution.
-2x - 2y = 16
y = -8
(0, -8)
(-8, 0)
(-16, -8)
(-16, -8)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve the system by substitution.
y = 2x − 11
2x − 8y = 4
(6, 1)
(6, −4)
(6, −1)
Infinite number of solutions
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve the system by substitution.
3x − 2y = 7
y = 2x − 7
No solution
(7, 7)
(−7, −7)
(−7, −3)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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