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

please help

Answer 2

@Hero @jdoherty

Answer 3

Not exactly sure how to do these, sorry!

Answer 4

here is a start