An equation of a parabola is given. (x - 4)2 = 4(y+ 3) (a) Find the vertex, focus, and directrix of the parabola. vertex ( x, y ) = focus ( x, y ) = K directrix (b) Sketch a graph showing the parabola and its directrix. 10/ 10 5 X -10 -5 10 -10 -5 5 10 -5 -5 10 - 10 - C 10/ 10 - 5 5