Good question! Is (0, 9) in Quadrant I, though? I’ve always seen points on the axis treated as though they’re not in any quadrant—that’s the assumption I’m working with here.

But, but, but … Can you explain the solution for those who are allergic to graphing? Why is solving this by setting the two inequalities equal to each other (and ending up with solutions x = 2, -3) going to give the wrong answer?

## Comments (3)

Good question! Is (0, 9) in Quadrant I, though? I’ve always seen points on the axis treated as though they’re not in any quadrant—that’s the assumption I’m working with here.

But, but, but … Can you explain the solution for those who are allergic to graphing? Why is solving this by setting the two inequalities equal to each other (and ending up with solutions x = 2, -3) going to give the wrong answer?

Setting them equal should work—I think you have an error somewhere in your calculation.

That tells you that is either 0 or 5, and 0 fails the “ and are greater than zero” test.