precal question

Question

Find an equation for the conic section with the given properties.

The parabola that passes through the point (8, −2),

 with vertex V(1, −1) and vertical axis of symmetry

Answer 1

f(x) = a(x - 1)² - 1 Vertex form

-2 = a(8 - 1)² - 1

Can you solve for a and answer?