Substitute One Variable
Authored by Anthony Clark
Mathematics
9th Grade
CCSS covered
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Evaluate the expression: x + 2 when x = 6
8
4
12
10
Tags
CCSS.6.EE.A.2C
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the first step to solve a system with substitution?
Substitute the values found from the previous step into one of the original equations and solve for the remaining variable
Solve the linear system for both its variables
Solve one equation for one of its variables
Substitute the expression from the previous step in the other two equations to obtain a linear system in two variables
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the final step to solve a system with substitution?
Substitute the values found from the previous step into one of the original equations and solve for the remaining variable
Solve the linear system for both its variables
Solve one equation for one of its variables
Solve one equation for one of its variables
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve for x and y using the substitution method.
5x + 3y = 7
y = 4
(4,1)
(4,-1)
(1,4)
(-1,4)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
If x = -3, in the equation -2x + y = 15, what is y? Type in the number.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which choice shows substitution correctly?
3x - y = 10
y = -6x + 3
3x - (-6x +3) = 10
3(-6x + 3) - y = 10
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
DROPDOWN QUESTION
1 min • 1 pt
Find the value of (x, y) that satisfies the equations by solving the system using substitution.
5x + 4y= −14
y = −7x − 15 The solution is (a) .
(-2, -1)
(0, 0)
(1, 1)
(2, 2)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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