The equation is
.
Compare the equation with
. \ \
Here
and
.
As
, the conic is a hyperbola.
Now
.
Substitute
.
.
Directrix:
. \ \
Directrix is perpendicular to the polar axis at a distance
to the right of the pole.
The polar equation represents a hyperbola.
\Directrix is perpendicular to the polar axis at a distance
to the right of the pole.