Question

Derive the equation of the parabola with a focus at (−7, 5) and a directrix of y = −11

Answer 1

f(x) = one thirty second (x + 7)2 − 3

Answer 2

(x - x)^2 + (y - -11)^2 = (x - -7)^2 + (y - 5)^2
y^2 + 22y + 121 = (x + 7)^2 + y^2 -10y + 25
32 y = (x + 7)^2 -96
y = (1/32)(x + 7)^2 - 3

Answer 3

@gnorris thank you

Answer 4

you're welcome