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What is the solution of the system? y = −3x 3x + 2y = 6 A.(2, 6) B.(−1, 3) C.(−2, 6) D.(1.5, −4.5)
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4 votes
What is the solution of the system?

y = −3x
3x + 2y = 6

A.(2, 6)
B.(−1, 3)
C.(−2, 6)
D.(1.5, −4.5)

User Abhishek Razy
by
6.2k points

2 Answers

3 votes
y = −3x
3x + 2y = 6

A) 3x + y = 0
B) 3x + 2y = 6

Multiply A) by -1
A) -3x - y = 0 then add to B
B) 3x + 2y = 6

y = 6

3x + 6 = 0
3x = -6

x = -2
Answer is C
User Konsole
by
6.7k points
6 votes
The answer is C

What you need to do is plug in 3x+2(-3x)=6 then solve for x.

X=-2

C is the only answer with x=-2

User Martin Clayton
by
6.2k points
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