Answer
$a.$
Domain = $\{-4, -2, 0$, $1\}.$
Range = $\{-4, -2,1, 3\}.$
$b.$
$\left[\begin{array}{r|r}
x & y\\
\hline -4 & 3\\
-2 & -4\\
-2 & 1\\
0 & 3\\
1 & -2
\end{array}\right]$.
Work Step by Step
$a.$
The domain consists of all the $x$-coordinates of the ordered pairs:
$\{-4, -2, 0$, $1\}.$
The range consists of all the $y$-coordinates of the ordered pairs:
$\{-4, -2,1, 3\}.$
$b.$
Table: $\left[\begin{array}{rr}
x & y\\
-4 & 3\\
-2 & -4\\
-2 & 1\\
0 & 3\\
1 & -2
\end{array}\right]$.
See the image for a mapping diagram.
