Answer
See the graph below.
Work Step by Step
We can easily graph the following function using a Graphing Calculator (Graph attached):
$f(x)=-4\tan{(\frac{\pi}{2}x})$
The $-$ sign in the beginning reflects the graph of the regular $tan{(x)}$ graph over the $y$-axis.
$4$ stretches the graph vertically by a factor of $4$.
Finally $\frac{\pi}{2}$ stretches the graph horizontally by a factor of $\frac{\pi}{2}$.
And we get the following graph below:
