A student in solving the following system of equations using the elimination method. Explain what their first step would be if they wanted to eliminate the y variable from equations (i) and (ii).

Linear equations (three variables)

Quiz
•
Mathematics
•
9th - 12th Grade
•
Hard
Quizizz Content
FREE Resource
20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
They would multiply equation (i) by 3 and equation (ii) by 4.
They would multiply equation (iiI) by 4.
They would multiply equation (i) by -3 and multiply equation (ii) by 4
They would multiply equation (i) by 3
2.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Solve the following System --your answer should be in the form: (x,y,z) NO SPACES unless "no solution" or "infinitely many solutions" typed how you see it without quotations.
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Solve the System.
( -2, 3, -3)
None of these
( -2, -3, 3)
( -3, 3, -2)
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A: 3x - 2y + 4z = 9
B: -2x + y - 2z = -8
C: 6x - 4y + 5z = 22
A good option for solving this would be:
then take 4 times B + C to get equation E.
take 2 times A + C to get E.
take -2 times A + C to get E.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
x
y
z
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
x+y+z=12
3x+y=19
5x=25
What would you solve for First?
Solve for x
Solve for y
Solve for z
(5,3,4)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many variables are we using if the solution set is
1
0
3
2
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