Systems by Substitution Steps
Authored by Anthony Clark
Mathematics
8th Grade
CCSS covered
Used 1+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Infinite number of solutions
(0, 7)
(-5, -7)
(5, 7)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the first step in solving a system by Substitution?
Make sure both equations are in standard form.
Make sure at least one equation is solved for one variable.
Make sure both equations are in slope-intercept form.
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Why does substitution help us solve a system of equations?
It changes one variable to an expression using the other variable, so we can solve an equation that only has one variable at a time.
It creates a problem with fewer steps.
It puts both equations in slope-intercept form for easy graphing.
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
TRUE or FALSE:
When both equations have the same variable isolated
(both y = or both x = ),
substituting the first into the second ends up looking like
you just set the two equal to each other.
TRUE
FALSE
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the solution to this system? Solve by substitution.
y= 4x + 3
2x - 3y = 21
(3,-9)
(-3,-9)
(-3,9)
(0,1)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(1, -4)
(1, 4)
(-4, -7)
(-7, -4)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve this system by substitution.
(1,-4)
(1,4)
(-4,-7)
(-7,-4)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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