Elimination Steps

Quiz
•
Mathematics
•
9th Grade
•
Hard
Standards-aligned
Anthony Clark
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What steps can be taken to isolate the y-value?
2x-4y=-10
2x + 5y =17
*Hint: isolating y, means eliminating the x-terms
Multiply the top equation by -2 and add the result equation to the bottom equation.
Multiply the bottom equation by -1 and add the result to the top equation.
Multiply the top equation by 5 and the bottom equation by 4 and adding the two equations.
Multiplying the top equation by 2 and the bottom equation by 2 and adding the resulting equations.
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What steps can be taken to isolate the x-terms?
Multiply the top equation by 3 and add the result to the bottom equation.
Multiply the top equation by -3 and add the result to the bottom equation.
Multiply the top equation by 5 and the bottom equation by 4 and add the resulting equations.
Subtract 9 from all terms in the top equation and add the resulting equations.
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
3.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Multiply the top equation by 2 and add the result to the bottom equation.
Multiply the top equation by -5 and the bottom equation by 4 and add the resulting equations.
Multiply the top equation by 6 and the bottom equation by 3 and add the resulting equation.
Multiply the top equation by 3 and add the result to the bottom equation.
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If you are solving a system by elimination and all of the variables cancel leaving you with "0 = -9", what does this tell you about the system?
The lines intersect at (0. -9). (one solution)
The lines coincide. (infinitely many solutions)
The lines are parallel. (no solution)
The lines intersect two times. (two solutions)
Tags
CCSS.8.EE.C.8B
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
what is the variable that willl be "eliminated"?
5x - 4y = 11
5x + 4y = -14
x variable
y variables
both variables
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
What would be the first step in finding the solution with elimination?
cross out the 3y and -3y
cross out the 4x and x
change all the signs of the second equation
add 1 and -11
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
MATH RESPONSE QUESTION
1 min • 1 pt
Solve for y.
(just the number)
Mathematical Equivalence
ON
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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