We will graph the given quadratic inequality then we will find the error Ron-Jon made. To graph the quadratic inequality, we will follow three steps.
Let's draw the graph of the related function, which is
Since produced a false statement, we will shade the region that does not contain the point. Also, note that the inequality is not strict. Therefore, the parabola will be solid.
Now, let's compare the correct graph with the given one.
We can see that Ron-Jon only made one mistake. He drew the parabola dashed instead of solid.