Question

Write an equation of the parabola with vertex (0, 0) and directrix x=2.

Answer 1

Answer:

          y² = -8x

Step-by-step explanation:

directrix x=2 and vertex (0, 0) means focus: (-2, 0)

also means the distance from the origin to the focus: a=2

y² = -4ax  

y² = -4×2x

y² = -8x