Graph $p(x)=\frac{-18x}{x^2+1}$ on your calculator and answer the following questions.

$p(x)$ is increasing on the interval$($s$)$:

$p(x)$ is decreasing on the interval$($s$)$:

$p(x)$ has a maximum of $$ at $x=$

$p(x)$ has a minimum of $$ at $x=$

The domain of $p(x)$ is: $$

The range of $p(x)$ is: $$

If any of the above do not exist, leave the answer box blank.