Elimination Adding and Subtracting
Authored by Anthony Clark
Mathematics
9th Grade
CCSS covered
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve by elimination:
7x-9y=29
7x+2y=-15
(-4,-1)
(-1.-4)
(-1,4)
(1,-4)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve by elimination:
7x - 5y = -24
-9x + 5y = 18
(3, 9)
(-3, -5)
(3, 11)
(3, -11)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve by elimination:
-6x+6y=6
-6x+3y=-12
(6,5)
(5,6)
(-5,6)
(6,-5)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When using the elimination method, what should be the goal when adding or subtracting the equations?
To eliminate one of the variables
To multiply the equations
To square the equations
To divide the equations
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the next step after adding or subtracting the equations in the elimination method?
Graph the equations to find the solution
Solve for the remaining variable
Divide the equations by a random number
Multiply the equations by a random number
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the first step in solving a system of linear equations using the elimination method?
Divide the variables by the same number
Align the variables by making the coefficients the same
Ignore one of the variables
Substitute the variables with random values
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the final step in solving a system of linear equations using the elimination method?
Substitute the value found into one of the original equations to solve for the remaining variable
Multiply both equations by a random number
Divide both equations by a random number
Add the two equations together without eliminating any variables
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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