Identify the type of conic and its orientation.
a) $$r= \frac{6}{1 + \mathrm{cos}(\theta)}$$
This is a ? Ellipse Hyperbola Parabola . The directrix is ? above below right of left of the pole.

b) $$r= \frac{16}{4 + 3 \mathrm{cos}(\theta)}$$
This is a ? Ellipse Hyperbola Parabola . The directrix is ? above below right of left of the pole.