Solve Systems with Elimination Steps
9th Grade
•20 Qs
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Solve Systems with Elimination Steps
Quiz
•
Mathematics
•
9th Grade
•
Hard
Standards-aligned
Anthony Clark
FREE Resource
20 questions
Show all answers
1.
DRAG AND DROP QUESTION
1 min • 2 pts
In this system x+3y=9 it'll be easiest to start by solving the first equation for x. The result of doing so is x=9-3y. Fill in the blanks to plug that expression in and solve for y: 4(9-3y)-2y =-6 36-12y-2y=-6 36-14y =-6 -14y= (a) y= (b)
-42
3
30
-3
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
REORDER QUESTION
1 min • 5 pts
Put the steps for solving by ELIMINATION in order:
Make sure the equations are lined up
Multiply one or both equations by a number to get common but opposite coefficients
Plug that number into either original equation and solve for the other variable
Subtract the equations to eliminate one variable
Solve for the remaining variable
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
3.
DRAG AND DROP QUESTION
1 min • 2 pts
What is the solution to the system of equations?
4x-y=3
3x+y=4
( (a) , (b) )
1
2
3
4
5
6
7
8
9
0
Tags
CCSS.HSA.REI.C.9
4.
DRAG AND DROP QUESTION
1 min • 5 pts
In this system
x+3y=9
4x-2y=-6
it'll be easiest to start by solving the first equation for x.
The result of doing so is x=9-3y.
Fill in the blanks to plug that expression in and solve for y:
4( (a) )-2 (b) =-6
36- (c) y-2y= (d)
36- (e) =-6
9-3y
y
12
-6
14y
x
10y
x+3y
24y
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve using Elimination Method:
(-1,5)
(-7,5)
(7,5)
(3,5)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
4x+ 9y = 28
-4x -y = -28
(-7,0)
(6,0)
(-6,0)
(7,0)
(6,7)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Solve using Elimination Method:
4x + 9y = 28
-4x - y = -28
(-7,0)
(6,0)
(-6,0)
(7,0)
(6,7)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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