Answer
The slope is $2$, and the $y-$ intercept is $-4$.
Work Step by Step
The given equation is
$\Rightarrow 3y=6x-12$
Divide each side by $3$.
$\Rightarrow \frac{3y}{3}=\frac{6x-12}{3}$
Simplify.
$\Rightarrow y=2x-4$
The slope-intercept form is
$y=mx+b$
Where, slope $=m$ and $y-$intercept is $=b$.
Hence, the slope is $2$, and the $y-$ intercept is $-4$.