My maximum x value, well, 10 seems pretty good. My minimum y value, this is essentially going to be my volume. I'm not going to have negative volume, so let me set that equal zero. And my maximum y value, let's see what would be reasonable here. I'm just going to pick a random x and see what type of a volume I get. If x were to be 5, it would be 5 times 20 minus 10, which is 10. So that would be, did I do that right?