The focus of a parabola is (−6,−3). The directrix of the parabola is y=4. What is the equation of the parabola?

Answers:

A. y = -1/14 (x + 1/2)^2 + 6
B. y = -1/28 (x + 6)^2 + 1/2
C. y = -1/14 (x + 6)^2 + 1/2
D. y = -1/28 (x - 1/2)^2 - 6