Math
posted by Abbey(Please help) .
Find the vertex, focus, and directrix of the parabola.
x^2  2x + 8y + 9 = 0
x^2  2x +1 = 8y + 9+ 1
(x1)^2 = 8(y1.25)
vertex:(1,1.25)
focus:(1,.75)
directrix: y=3.25

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
Respond to this Question
Similar Questions

Pre Cal Check
focus: (0,p) vertex: if not given, then it is assumed (0,0) Directrix: k+p or kp, i'm not sure I think these are the general equations for the focus, vertex, and directrix of a parabola, but i'm not sure. could someone please check … 
Pre Cal
write the equations of the parabola, the directrix, and the axis of symmetry. vertex: (4,2) focus: (4,6) if someone could explain how to do this problem then that would be great! thanks in advance! Formats to help you find the equation … 
Algebra II
Write an equation for the parabola with focus (1,3) and vertex (0,3). I cannot find any example in my book that works a problem with the vertex, all of the examples that I have to go by give only the focus and directrix. Thanks. 
Algebra
Can someone tell me if I am right? I need to find the equation of a parabola. I am not sure if this is the correct way or if I have the correct answer. Vertex at origin, focus is at (0,3) Equation of parabola vertex (0,0) focus (0,3) 
algebra
6. Find the equation of each parabola described below. a) parabola with vertex (0,0) and the focus (0,7) b) parabola with focus (3,0) and directrix x=3 c) parabola with vertex (3,3) and directrix x=1 d) parabola with focus (2,1) … 
Math
Find the vertex, focus and directrix of the parabola. 4x  y^2  2y  33 = 0 y^2+2y+1 = 4x+33+1 (y+1)^2 = 4(x+8.5) vertex:(1,8.5) focus:(2,8.5) Directrix: x=0 Is this correct? 
Math
Find the vertex, focus, and directrix of the parabola. x^2  2x + 8y + 9 = 0 x^2  2x +1 = 8y + 9+ 1 (x1)^2 = 8(y1.25) vertex:(1,1.25) focus:(1,.75) directrix: y=3.25 My teacher said that I have sign errors. I do not know where … 
maths
Given that the equation of the parabola is 5y^2 + 24x = 0. Find (1)The Axis and vertex of the parabola (ii)The focus and the directrix (iii)The distance from the directrix to the focus 
Vertex, Focus, & Directrix of Parabolas
Find the Vertex, Focus, and Directrix of the parabola: x^2 12x48y+276=0 Thank you so much <3 
Algebra2
Write an equation of a parabola with a vertex at the origin and a directrix at y=5. my answer is focus 6,0, directrix =6