Find the vertex, focus, and directrix of the parabola.

x^2 - 2x + 8y + 9 = 0

x^2 - 2x +1 = -8y + 9+ 1
(x-1)^2 = -8(y-1.25)

vertex:(1,1.25)
focus:(1,-.75)
directrix: y=3.25

4 answers

Is this correct?

it looks good to me

My teacher said that I had sign errors. I do not see where I went wrong.

I don't either