Add/Subtract Elimination
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 • 7 pts
What is the first step in solving a system of equations by elimination/matrices?
Get both equations in standard form and line up the like terms.
Get both equations in slope-intercept form.
Get both equations equal to zero.
Put the x terms first.
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
MULTIPLE CHOICE QUESTION
1 min • 7 pts
The solution (x, y) to a system of equations is the point where they...?
Run off the graph
Don't touch
Intersect
Exist
Tags
CCSS.8.EE.C.8B
3.
MULTIPLE CHOICE QUESTION
1 min • 7 pts
Solve using elimination.
7x + 2y = 24
8x + 2y = 30
(6,-9)
(-9,6)
No solution
Infinite number of solutions
Tags
CCSS.8.EE.C.8B
4.
MULTIPLE CHOICE QUESTION
1 min • 7 pts
a method to solving a system of equations by getting rid of one of the variables first to solve for the other variable.
Systems by Graphing
Systems by Substitution
Systems by Elimination
Systems by Drawing
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
1 min • 7 pts
5x - y = 12
3x + y = 4
which variable should be "eliminated" first?
x
y
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
MULTIPLE CHOICE QUESTION
1 min • 7 pts
6x + 7y = -15
6x - 2y = 12
which variable should be "eliminated" first?
x
y
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
MULTIPLE CHOICE QUESTION
1 min • 7 pts
Solve the following using elimination.
x − y = 11
2x + y = 19
(-1, 10)
(30, 19)
(19, 30)
(10, -1)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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