Answer
See below.
Work Step by Step
Calculate the corresponding y for each value of x
$\left[\begin{array}{cccccc}
x & -1 & 0 & 1 & 2 & 3\\
y & (-1)^{2}-3(-1) & (0)^{2}-3(0) & (1)^{2}-3(1) & (2)^{2}-3(2) & (3)^{2}-3(3)\\
& =4 & =0 & =-2 & =-2 & =0\\
\hline & & & & & \\
(x,y) & (-1,4) & (0,0) & (1,-2) & (2,-2) & (3,0)
\end{array}\right]$
Plot the points and draw a smooth curve through them.