Quad func help?

The equation  y2−6y−x+13=0 represents a parabola.

Drag and drop the expressions into the boxes in the equation to rewrite the equation of this parabola in standard form.

 

x=(               )^2+ ____

 

choices:

y+3

y-3

y+6

y-6

-13

-9

-4

4

9

13