Solving Systems Using Substitution and Elimination

Quiz
•
Mathematics
•
8th Grade
•
Hard
Standards-aligned
Anthony Clark
FREE Resource
14 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the best method to use?
−4x − 2y = −12
4x + 8y = −24
Substitution
Elimination
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Erin is 3 years younger than twice Alex's age. Their ages combined are 33 years. How old are Alex and Erin. If x=Erin's age and y=Alex's age, choose the system that matches the situation.
x + y = 33
y = 2x - 3
x + y = 33
x = 2y - 3
x + y = 33
x = 3 - 2y
x + y = 3
x = 33 - 2y
Tags
CCSS.HSA.CED.A.3
3.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
What does the second equation need to be multiplied by to get the y's to eliminate?
5
0
-1
2
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
4.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
(0, -4)
(2, 4)
No solution
(2, 0)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Solve by elimination:
4x+4y=4
3x+4y=10
(7,-6)
(-6,7)
(6,7)
(7,6)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
y = -6x + 5
-2x + y = 5
(-3, -6)
(-6, 3)
(0, 5)
(-3, 5)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
3x + y = 1
y = 4x + 1
(0, -1)
No Solution
(0, 8)
(0, 1)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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