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What is the solution of the system? Use substitution. 3x + 2y = 7 y = –3x + 11 A. (6, -3) B. (6, -7) C. (-4 19/2) D. (5, -4)
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What is the solution of the system? Use substitution.

3x + 2y = 7
y = –3x + 11

A. (6, -3)
B. (6, -7)
C. (-4 19/2)
D. (5, -4)

User Thiago Loureiro
by
8.1k points

2 Answers

4 votes

i think it is A.... (6,-3)

User Dima Ti
by
7.8k points
7 votes
A) 3x + 2y = 7
B) 3x +y = + 11 multiplying B) by -1
B) -3x -y = -11 then adding equation A
A) 3x + 2y = 7
y = -4
x = 5
Answer is D


User Ray Toal
by
7.8k points
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