What is the first step in solving a system of linear equations by substitution?

Solving Systems of Linear Equations by Substitution

Interactive Video
•
Mathematics, Science
•
7th - 10th Grade
•
Medium

Amelia Wright
Used 1+ times
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Substitute one equation into the other
Isolate one variable in one of the equations
Add the equations together
Multiply the equations by a constant
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the equation -x - y = 2, what operation is performed first to isolate x?
Subtract y from both sides
Divide both sides by 2
Multiply both sides by -1
Add y to both sides
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
After isolating x, what is the expression for x in terms of y?
x = -2 - y
x = 2 - y
x = -2 + y
x = 2 + y
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the next step after rewriting one equation in terms of a single variable?
Graph the equations
Check the solution
Substitute the expression into the other equation
Solve for the other variable
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of substituting x = 2 - y into the equation 2x + 3y = 2?
4 - 2y + 3y = 2
2 - y + 3y = 2
4 + 2y - 3y = 2
2 + y - 3y = 2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the value of y after solving the equation 4 - 2y + 3y = 2?
y = 3
y = 2
y = 0
y = 1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Once y is found, what is the next step?
Substitute y back into the original equation to find x
Graph the solution
Check the solution
Solve for another variable
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