focus at (-2,0) directrix the line x=2
3 answers
I already took the subject. You try.
This is a pure cookbook question and just follow the procedure in your text. We are here to help if you get stuck, not to do it for you.
eg
https://www.khanacademy.org/math/algebra2/conics_precalc/parabolas_precalc/v/using-the-focus-and-directrix-to-find-the-equation-of-a-parabola
https://www.khanacademy.org/math/algebra2/conics_precalc/parabolas_precalc/v/using-the-focus-and-directrix-to-find-the-equation-of-a-parabola