Substitution With Two Variables
9th Grade
•15 Qs
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Substitution With Two Variables
Quiz
•
Mathematics
•
9th Grade
•
Hard
Standards-aligned
Anthony Clark
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
AJ was asked to find the solution to this system of equations. x = 7 - 2y 2x + y = 5 Noticing that x was isolated and set equal to 7 - 2y, he decided to replace x in the second equation with its value. What method is AJ using and what equation did he write?
Elimination; 2(7-2y) + y = 5
Graphing; 2x = (7-2y) + y = 5
Substitution; 2(7-2y) + y = 5
Substitution; x = 7 - 2y + 2x + y = 5
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Alexandra finds that she can give 3 haircuts and 2 hair dyes in 315 minutes. Giving 2 haircuts and 4 hair dyes takes 450 minutes. Which system of equations represents the situation?
3x + 2y = 315
2x + 4y = 450
3x + 2y = 450
2x + 4y = 315
2x + 2y = 315
3x + 4y = 450
Tags
CCSS.HSA.CED.A.3
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kayla solved the following system and found the solution to be (10, -9). x = -3y - 17 2x + 3y = -7 What would the graph of this system look like?
A point on the coordinate plane
Parallel Lines
Coincident Lines (lines that graph one on top of the other)
Lines that intersect at one point
Tags
CCSS.8.EE.C.8B
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve the system by using the substitution method
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
1 min • 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
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve the system of equations using the substitution method
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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