Systems by Substitution Steps
Authored by Anthony Clark
Mathematics
8th Grade
CCSS covered
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the first step to solve this system by substitution?
y = -2x
3x - 4y = 5
3(-2x) - 4y = 5
3x - 4(-2x) = 5
3(-2x) - 4(-2x) = 5
3x - 4y = -2x
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the first step to solve this system by substitution?
2(5) + 3y = 4
2x + 3(5) = 4
2(5) + 3(5) = 4
2x + 3y = 5
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the first step to solve this system by substitution?
2(5) + 3y = 4
2x + 3(5) = 4
2(5) + 3(5) = 4
2x + 3y = 5
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the first step to solve this system by substitution?
3x + 5 = 2x - 4
y = 3(2x - 4) + 5
y = 2(3x + 5) - 4
y = 3x + 5 + 2x - 4
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
You are solving a system by substitution. All the variables vanish and you get a false statement. What is the answer?
No Solution
One Solution
Two Solutions
Infinitely Many Solutions
Tags
CCSS.8.EE.C.8B
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
y = 3x + 5
y = -2x - 15
The first step is:
3x + 5 = -2x - 15
What is the second step?
5x + 5 = -15
x + 5 = -15
8x = -17x
15x = 30x
5 = x - 15
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
3x + 2y = 16 x = -7y + 19 The first two steps are: 3(-7y + 19) + 2y = 16 -21y + 57 + 2y = 16 What is the next step?
36y + 2y = 16
23y + 57 = 16
19y + 57 = 16
-19y + 57 = 16
-21y + 2y = 41
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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