Solving by Elimination Multiplying Both Equations
Authored by Anthony Clark
Mathematics
9th Grade
CCSS covered
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13 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Identify which method for solving systems is being described by this fact: If like terms do not have a matching coefficient, multiplying one or both of the equations by a certain factor to transform the equations into a set of like terms with a matching set of coefficients.
Graphing
Substitution
Elimination (adding or multiplying)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
DRAG AND DROP QUESTION
1 min • 1 pt
This system of equations would have (a) solution(s).
one
no
infinitely many
Tags
CCSS.8.EE.C.8B
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The coefficients of the eliminated variable must be _____.
the same number opposite signs (opposites)
exactly the same
completely different
doesn't matter
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
4.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
x + 2y = -4
x - 2y = 8
(2,5)
(2,-3)
(2,-2)
(-3,2)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In the elimination method, what operation is used to eliminate one of the variables?
Multiplication
Addition or subtraction
Division
Exponentiation
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
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
7.
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
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