Let me swap the sides so it makes it clear that now x is a function of y. x is equal to y squared. That's our top function, the way we've drawn it, the kind of outer shell for our figure. And then y is equal to x squared. If you take the principal root of both sides of that, it all works out because we're operating in the first quadrant here. That's the part of it that we care about. So you're going to get x is equal to the square root of y. x is equal to square root of y. That is our yellow function right over there.