Question

Derive the equation of the parabola with a focus at (−5, 5) and a directrix of y = −1.

f(x) = −one twelfth (x − 5)^2 + 2
f(x) = one twelfth (x − 5)^2 + 2
f(x) = −one twelfth (x + 5)^2 + 2
f(x) = one twelfth (x + 5)^2 + 2

Answer 1

@phi

Answer 2

@ParthKohli

Answer 3

http://openstudy.com/study#/updates/54c0721ae4b0d372e15bd7e5

Answer 4

This user asked the same question, and got a detailed explanation and answer from @Miracrown