Answer
The solution set is the region shaded GRAY
Work Step by Step
We will graph the solution region for each inequality.
1. (red)
$x=3 \quad $solid line ( sign is $\leq )$,
... a vertical line passing through ($3,0$)
Testing (0,0):$\quad 0 \leq 3 \quad ?$
Yes, shade the region containing (0,0)
2 (blue)
$y=-1 \quad $solid line ( sign is $\leq )$,
... a horizontal line passing through $(0,-1) $
Testing (0,0):$\quad 0 \leq -1 \quad ?$
No, shade the region not containing (0,0)
The solution set is the region with BOTH shadings
The solution set is the region shaded GRAY