What is the equation of the directrix for the parabola -8(y-3)=(x+4)^2?

Question

1.) y=5

2.) y=1

3.) y=-2

4.) y=-6

Answer 1

A parabola is the locus of points such that the distance from a point (the focus) is equal to the distance to a line (the directrix).. The relationship between the equation of the parabola and the equation of the directrix can be found in any textbook of plane analytic geometry, which I suggest you consult.