Solving Equations Using Elimination
9th Grade
•19 Qs
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Solving Equations Using Elimination
Quiz
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
Standards-aligned
Anthony Clark
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19 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Add the x terms in the two equations and the y terms in the two equations so you get 3x + 8y = 11
Multiply all terms in the top equation by 2 so that you can eliminate the x terms
Multiply the x in the first equation by -2 so you get -2x + y = 2
Multiply all terms in the top equation by -2 so that you can eliminate the x terms.
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Describe the error in solving the system of equations using elimination:
They eliminated the x terms when they should have eliminated the y terms.
The subtracted 5x and x to get 4x, but they should have added the x terms to get 6x = 24.
They added 16 and 8 to get 24, but they should have subtracted them to get 8 on the right side of the equation.
They eliminated the y terms, but they couldn't because one is a negative and one is a positive.
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(-2,2)
(2,-2)
(-2,-2)
(-2, 1/2)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(16,19)
(19,-16)
(-19,-16)
(19,16)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve the following system using elimination
-5x + 3y = -1
5x - 3y = -4
(1,3)
(2,1)
(4,5)
Infinite Solutions
No Solutions
Tags
CCSS.8.EE.C.8B
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve using Elimination.
(0,0)
(-8,-8)
(-8,0)
(0,-8)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Solve the system:
x + 6y = 17
-x + 3y = -8
(5, 2)
(11, 1)
(1, 11)
no solution
Tags
CCSS.8.EE.C.8B
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