Answer
$(3,-1)$
Work Step by Step
Graphing,
$y=-1 $ is a horizontal line passing through (0,-1).
$x=3$ is a vertical line, passing through (3,0)
Graphically solving: $x=3,\ y=-1$.
Checking:$\qquad \left\{\begin{array}{lll}
-1 =-1 & & \\
& & \\
3=3 & &
\end{array}\right.$
both equations are satisfied, $(3,-1)$ is the solution.