Question

Write the equation of the parabola in vertex form.

Vertex:(4,4)
Point :(2,-8)

Answer 1

Explanation:

y = a(x-4)^2 + 4

Plug in (2,-8) and solve for a:

-8 = a(2-4)^2 + 4

a = -3

y = -3(x-4)^2 + 4