Hi,
conic Forms:
Ellipse is
Hyperbola opening Up and down is:
Hyperbola opening right and left is:
Parabola opening up(a>0) or down(a<0),
Parabola opening right(a>0) or left(a<0),
x^2-8x-4y=-12
(x-4)^2 - 4y = -12 + 16
(x-4)^2 = 4y +4 Parabola opening Up