Question: In Exercises 4-15, graph each equation in a rectangular coordinate system. If two functions are indicated, graph both in the same system. Then use your graphs to identify each relation's domain and range.

\(f\left( x \right)=\left\{ \begin{aligned} & 2\,\,\,\,\,\,\text{if }x\le 0 \\ & -1\,\,\,\text{if }x>0 \\ \end{aligned} \right.\)