Steps to solving Elimination quiz
Authored by Lamont Williams
Mathematics
9th - 12th Grade
CCSS covered
Used 1+ times
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8 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If you were to Eliminate for x, would you need to multiply to cancel?
4x+ 9y = 28
-4x -y = -28
Yes, The x numbers are NOT matching so we need to multiply.
No. The x numbers ARE matching so we do not need to multiply.
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If you were to Eliminate for x, is one positive and one negative?
4x+ 9y = 28
-4x -y = -28
Yes.
No.
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If you were to Eliminate for x, you would add straight down. What would the equation look like?
4x+ 9y = 28
-4x -y = -28
8y=0
9y=56
-8y=56
10y=28
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If you were to Eliminate for x, you would add straight down, then Divide. What is the value of y?
4x+ 9y = 28
-4x -y = -28
y=0
y=6
-y=56
y=2.8
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
If you were to Eliminate for x, you would add straight down, then Divide. Now that you have found the value of y=0, what is the equation if you were to substitute 0 in for the top equation?
4x+ 9y = 28
-4x -y = -28
4x+9(0)=28
4(0)+9y=28
4(0)+9(0)=28
4x+9y=0
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
If you were to Eliminate for x, you would add straight down, then Divide. Now that you have found the value of y=0, an if you were to substitute 0 in for the top equation, what would be the equation to solve for x and the solution for x?
4x+ 9y = 28
-4x -y = -28
4x=28
x=7
9x=28
x=3
4x=28
x=32
9x=28
x=19
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A
B
C
D
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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