Determine vertices , foci, directrixes and sketch graph of curves given, describe all work and illustrate all steps taken in determining the vertices, foci , derectrixes. Illustrate all step.
a) (y^2)+4y+8x-12=0
b) (16x^2)+(25y^2) -64x+150y+279=0 and
c) (9x^2)-(4x^2)+54x+8y+78=0
Illustrate all steps.