5. Write an equation of a parabola with a vertex at the origin and a directrix at v = 5 (1 point)
x = 5y ^ 2
x = - 1/20 * y ^ 2 y = - 1/20 * x ^ 2 ^
v = - 20x ^ 2
r
x = 5y ^ 2
x = - 1/20 * y ^ 2 y = - 1/20 * x ^ 2 ^
v = - 20x ^ 2
r