Systems by Substitution, Elimination, and Combining
8th Grade
•10 Qs
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Systems by Substitution, Elimination, and Combining
Quiz
•
Mathematics
•
8th Grade
•
Hard
Standards-aligned
Anthony Clark
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve the system:
x + 6y = 17
x - 3y = 8
(5, 2)
(11, 1)
(1, 11)
no solution
Tags
CCSS.8.EE.C.8B
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve the system:
2x + 3y = -2
3x - 2y = 23
(5, -4)
(-4, 5)
(-5, 4)
infinite solutions
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the Solution to this system?
(2,-2)
(-2,2)
All Real Numbers
No Solution
Tags
CCSS.8.EE.C.8A
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
True or False:
To solve a system of equations using the elimination method, we need to get one of the variables to cancel (for example 2x and -2x).
True
False
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which method would probably be best to solve this system of equations? y = 4x + 1 3x + 2y = 13
Graphing
Substitution
Elimination
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If you use the substitution method, which of the following would be the correct substitution?
y = 4x + 1
3x + 2y = 13
3(4x + 1) +2y = 13
3x + 2(4x + 1) = 13
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If I am solving by elimination, is this system "ready to go" where I can eliminate one of the variables immediately? If so, which variable can I eliminate?
4x + 9y = 28
-4x - y = -28
Yes, "x" can be eliminated immediately.
Yes, "y" can be eliminated immediately.
No, neither variable is "ready to go."
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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