So it's going to be our total distance in the horizontal direction. So this first part, as we're doing it in a different color, you can't see. So this part right over here is just going to be the value of the function. It's going to give you an x value. But then you have to add another 2 to go all the way over here. So your entire radius is a function of y. Your radius as a function of y is going to be equal to the square root of y plus 1.