Question

Determine the equation of the parabola that opens to the right, has vertex (-9,-4),

and a focal diameter of 16.

Answer 1

y = -1/16 (x+9)^2 - 4

Explanation:

y = -1/16 (x^2 + 18x + 81) - 4

y = -1/16 x^2 - 18/16 x - 81/16 - 4

y = -1/16 x^2 - 18/16 x - 85/16