To solve for \( y \) in the equation \( 6y = -12 \), you need to isolate \( y \). You can do this by dividing both sides of the equation by 6:
\[ y = \frac{-12}{6} \]
Now, simplify the right side:
\[ y = -2 \]
Thus, the solution is
\[ \boxed{-2} \]