Answer
Plot the intercepts then connect them using a straight line.
Refer to the graph below.
Work Step by Step
To graph the given equation we need to find the $x$ and $y$-intercepts, plot them, then connect the points using a straight line.
To find the $x$-intercept, set $y=0$ then solve for $x$ to obtain:
$$\begin{align*}
3x-2y&=12\\
3x-2(0)&=12\\
3x&=12\\
x&=4
\end{align*}$$
To find the $y$-intercept, set $x=0$ then solve for $y$ to obtain:
$$\begin{align*}
3x-2y&=12\\
3(0)-2y&=12\\
-2y&=12\\
y&=-6
\end{align*}$$
Graph the given equation by plotting $(4, 0)$ and $(0, -6)$ then connecting them using a straight line to obtain the graph below: