Answer
$ a.\quad$Intercepts: $(4,0)$ , $(0,-6)$
$b.$
Work Step by Step
$\begin{array}{ll}
\text{x-intercept} & \text{y-intercept}\\
(y=0) & (x=0)\\
& \\
6x-4(0)=24 & 6(0)-4y=24\\
6x=24 & -4y=24\\
x=4 & y=-6\\
& \\
(4,0) & (0,-6)
\end{array}$
Draw a line through the two points.