"Find the equation of the parabola with vertex at the origin that passes through the point http://college.hmco.com/blackboard/t...s/hl2122_1.gif and opens to the right."

At first I used the standard form of the equation of a parabola and I got

(y-9)^2=4p(x-9)

So is my next step trying to find the focus? And how?