Question

finding the focus and directrix of a parabola

Answer 1

First rearrange it in y in terms of x

Answer 2

\[y=-\frac{x^2}{8}-x-1\]

Answer 3

factor?

Answer 4

To find the directrix and focus, use completing the square

Answer 5

Factor works too

Answer 6

but I don't think there's method to factor except completing the square

Answer 7

isnt the square already done on the right side?

Answer 8

\[y=1-\frac{1}{8} (x+4)^2\]