Systems of Equations Elimination Steps
Authored by Anthony Clark
Mathematics
9th Grade
CCSS covered
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17 questions
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1.
OPEN ENDED QUESTION
1 min • 6 pts
Before you begin:
Remember to LOOK FOR THE VARIABLES THAT WILL ELIMINATE TO EQUAL ZERO.
1. Line them up and look for the zero pair. If you need to, MULTIPLY to make a zero pair.
2. ADD the equations.
3. SOLVE for the variable. (find x= or y=)
4, Find the OTHER variable. Substitute the x= or y= you found in step #3.
"TYPE YES" when you have read the steps.
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Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
MULTIPLE CHOICE QUESTION
1 min • 6 pts
Which variable do you add to ELIMINATE (equal zero)?
the x variables will equal zero
the y variables will equal zero
the numbers without variables will equal zero
What's a variable?
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
3.
MULTIPLE CHOICE QUESTION
1 min • 6 pts
Solve the system of linear equations
5x - 3y = -36
2x + 3y = 15
(-3, 7)
(-3, -5)
(7, -3)
(-3, 0)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
4.
MULTIPLE CHOICE QUESTION
1 min • 6 pts
x-y=11
2x+y=19
(10,-1)
(-1,10)
(3,-4)
(6,7)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
1 min • 6 pts
Solve by elimination
-6x + 5y = 1
6x + 4y = -10
(1,-1)
(0,-1)
(1,1)
(-1,-1)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
MULTIPLE CHOICE QUESTION
1 min • 6 pts
Solve by elimination:
7x-9y=29
7x+2y=-15
(-4,-1)
(-1.-4)
(-1,4)
(-1,6)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
MULTIPLE CHOICE QUESTION
1 min • 6 pts
what do you need to multiply the top equation by to make a zero pair:
5x - 2y = 11
-10x + 3y = -4
5
-1
2
-2
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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