What is the first step in solving the system of equations y = x - 1 and y = 2x - 2 using substitution?
Solving Systems of Linear Equations by Substitution

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Mathematics
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1st - 6th Grade
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Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Add the two equations together
Subtract the second equation from the first
Replace y in the second equation with x - 1
Multiply both equations by 2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
After finding x = 1 in the first example, what is the next step to find the value of y?
Multiply x by 2
Substitute x = 1 into y = x - 1
Substitute x = 1 into y = 2x - 2
Add 1 to both sides of the equation
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you verify the solution for the system of equations y = x - 1 and y = 2x - 2?
Graph the equations
Use a different method to solve
Solve the equations again
Check if the point satisfies both equations
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the second example, what expression is substituted for y in the equation 4x + 2y = 27?
4x + 2
x - 1
2x - 2
x + 12
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final solution for the system of equations y = x + 12 and 4x + 2y = 27?
(0, 1)
(1/2, 25/2)
(2, 3)
(1, 0)
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