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*find the volume of solid under the graph f(x,y) = x+ y above the region y^2 > x and 0 < x < 9*

So pretty much I have the following integral set up

0 -> 9 dx

-sqrt(X) -> sqrt (X) dy

integrating over the function x+y

However, when I look at the solutions they did the same thing except for their dy, they took it over

0 -> sqrt (X)

is that a misprint or did I do something wrong? Because when I think about it, it's pretty much a parabola and nothing is restricting it from taking each end of the region

Where as the solutions is only taking half the parabola (from 0 to 9 along X axis which is agreed)

so is the solutions a misprint or did I do something wrong?