# math

posted by
**sara**
.

Find an expression for the function whose graph is the bottom half of the parabola x + (y - 9)2 = 0.

y=?

some help would be appreciated!

posted by
**sara**
.

Find an expression for the function whose graph is the bottom half of the parabola x + (y - 9)2 = 0.

y=?

some help would be appreciated!