Question

Solve for y in the two equations below using substitution.

3x – 6y = 9
– 3x + 3y=9
A. y = 1/3
B. y = - 1/3
C. y = -6
D. y = 6​

Answer 1

C. y = -6

Explanation:

3x – 6y = 9

–3x + 3y = 9

-3y = 18

y = -6