Solving Systems of Equations by Substitution
Authored by Terry Sentell
Mathematics
8th Grade
CCSS covered
Used 12+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 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
Isolate one of the variables to get slope/intercept form of the equation
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
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the second step to solve a system with substitution?
Substitute the value found from the previous step into the other equation
Solve the linear system for both its variables
Solve one equation for one of its variables
Substitute the expression from the previous step into both original equations to obtain a linear system in two variables
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the third step to solve a system with substitution?
Solve the equation from the previous step to find the value of the first 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
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the final step to solve a system with substitution?
Substitute the value 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
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Solve by Substitution:
y = -6
-3x - 6y = 24
(6, 6)
(6, -6)
(4, -6)
(-6, 4)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
MULTIPLE CHOICE QUESTION
3 mins • 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
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Solve the following systems of equations using substitution:
2y + x = -15
x = 3y
(-3, -9)
(-9, -3)
(-3, 9)
(9, -3)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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