Solving Linear Equations by Elimination
Authored by Anthony Clark
Mathematics
9th Grade
CCSS covered
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10 questions
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1.
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
2.
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
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the purpose of multiplying the equations in the elimination method?
To waste time and effort
To confuse the person solving the equations
To make the equations look more complicated
To create opposite coefficients for one of the variables
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which is the best method for solving this system of equations?
Substitution
Elimination
Graphing
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which is the best method for solving this system of equations?
x-y=11
2x+y=19
Elimination
Substitution
Graphing
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
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
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many solutions does this system of equations have?
One Solution
No solution
Infinitely Many Solutions
Two Solutions
Tags
CCSS.8.EE.C.8A
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