Question

Find the unknown coefficients.
11) y = x² + bx + c with vertex (-8, 3)

Answer 1

Explanation:

Vertex form of a parabola

f(x) = a(x-h)^2 + k where h, k === -8,3

= (x- -8)^2 + 3 assuming a =1

= x^2 + 16x + 64 + 3

f(x) = y = x^2 + 16x + 67 a = 1 b= 16 c = 67