SOLUTION: How can I find the equation of a parabola with vertex at (2,3) and directrix is x=5?

Algebra ->  Quadratic-relations-and-conic-sections -> SOLUTION: How can I find the equation of a parabola with vertex at (2,3) and directrix is x=5?      Log On


   

Question 1072086: How can I find the equation of a parabola with vertex at (2,3) and directrix is x=5?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
-4%2Ap%2A%28x-h%29=%28y-k%29%5E2

p is distance from focus to vertex or from directrix to vertex.
p=3.

Vertex given means h=2, k=3.

highlight%28-4%2A3%28x-2%29=%28y-3%29%5E2%29
or
highlight%28-12%28x-2%29=%28y-3%29%5E2%29