AnswersNC-Math 2Solving Linear Systems by Substitution

Solving Linear Systems by Substitution Answers

10 verified answers
1
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Which first step for solving the given system using substitution results in an equation without fractions?

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A
Solve for x in the first equation.
B
Solve for y in the first equation.
C
Solve for x in the second equation.
D
Solve for y in the second equation.
2
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Lucia tried to solve the system below. Lucia’s Work What error did Lucia make?

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A
When Lucia solved the second equation for x, she subtracted 2y from both sides.
B
When Lucia solved for the value of y, she treated –2y as 2y.
C
When Lucia solved for the value of x, she added 18 to both sides.
D
When Lucia solved the second equation for x, she treated –2(–9) as 18 instead of –18.
3

Which statement describes the system of equations?

Question illustration
A
It has infinitely many solutions.
B
It has no solution.
C
It has one solution .
Option C
D
It has one solution (8, 2).
5

Which first step for solving the given system using substitution results in an equation without fractions?

Question illustration
A
Solve for x in the first equation.
B
Solve for y in the first equation.
C
Solve for x in the second equation.
D
Solve for y in the second equation.
7

Which statement describes the system of equations?

Question illustration
A
It has infinitely many solutions.
B
It has no solution.
C
It has one solution (0, 1).
D
It has one solution (4, –1).

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