Question

F(x) = -2(x+3)(x - 1)
What is the vertex

Answer 1

see attechment: - vertex (-1, 8)

Explanation:

focus | (-1, 63/8) = (-1, 7.875)

vertex | (-1, 8)

semi-axis length | 1/8 = 0.125

focal parameter | 1/4 = 0.25

eccentricity | 1

directrix | f = 65/8