Question

What are the advantages of expressing the equation of a parabola in focus-directrix form?

Answer 1

u have all the critical informatio right at hand.

Answer 2

Hmm...You get to know the focus, and the directrix right away. Seems neat. :)

Answer 3

And besides, you can avoid the confusion when the parabola's been transformed. i.e rotated, translated, that sort of nasty stuff my math teacher like to do.

Answer 4

My professor wanted an answer for this, i accidentally skipped over it

Answer 5

if you could give an "official" answer, what would it be kind and nice @Shadowys ?

Answer 6

Lol You could say that:
It allows you to know the focus and directrix of a parabola right away.

Answer 7

thank you!