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5 votes
Use the substitution method to solve the system of equations. Choose the correct ordered pair. 3x – y = 7 2x – 2y = 2

A. (2, 2)
B. (3, -1)
C. (3, 2)
D. (2, -2)

User DataPsycho
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2 Answers

2 votes
y=2, and x=3 so it is c
User FCin
by
7.9k points
5 votes

Answer:

The solution set is (3,2)

C is correct

Explanation:

Given: System of equation.


3x-y=7


2x-2y=2

We will solve x and y using substitution method.


3x-y=7


y=3x-7------------------(1)

Substitute into 2x-2y=2


2x-2(3x-7)=2


2x-6x+14=2


-4x=-12


x=3

Put x=3 into eq(1)


y=3(3)-7


y=2

Hence, The solution set is (3,2)

User Kathy
by
8.0k points

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