Solving Systems of Equations
Interactive Video
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
SIMONE CLARKE
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the system of equations x + 4y = 1 and 3x + 2y = -12, which variable is most convenient to isolate first for the substitution method?
x in the first equation
y in the first equation
x in the second equation
y in the second equation
2.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
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3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
After isolating x from the first equation (x + 4y = 1) as x = -4y + 1, what is the correct substitution into the second equation (3x + 2y = -12)?
3(1 - 4y) + 2y = -12
3(-4y + 1) + 2y = -12
3x + 2(1 - 4y) = -12
3x + 2(-4y + 1) = -12
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
After substituting and simplifying, what is the value of y in the system of equations?
-3/2
3/2
-15/10
15/10
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the value of x that satisfies the system of equations?
-5
5
-6
6
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