The equation is
.
Compare the polar equation with
.
Here
and
.
Since
, the conic is parabola.
Directrix is perpendicular to the polar axis at a distance
to the right of the pole.
Therefore, the vertex is at
.
The directrix is
.
Construct a table for different values of
.
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\Graph:
\(1) Graph the polar co-ordinates.
\(2) Plot the points.
\(3) Connect the points to a smooth curve.
\
The conic is parabola.
\The directrix is perpendicular to the polar axis at a distance
right to the pole.
The vertex is at
.
.