write focus (-6,0), directrix x=6 in standard form

Question

i really need help this is hard

Answer 1

If this is a parabola, then (-6, 0), the focus, is left of the vertex, and the parabola opens left.  The equation of

 

 

the parabola is   y² = 4px,  where p is the -6.  Therefore, the equation is:  y² = -24x