Solution Set: $[-3, \infty)$ Refer to the image below for the graph.
Work Step by Step
Subtract 3 on both sides of the inequality to obtain: $y \ge 0-3 \\y \ge -3$ On a number line, the numbers that are greater than or equal to $-3$ are found from $-3$ to the right. Thus, to graph the solution set on a number line, plot a solid dot at $y=-3$ and shade the region to its right. (refer to the attached image in the answer part above)