The equation is .
Compare this polar equation with standard form .
Where and
.
Substitute in
.
.
Since , so the conic is parabola.
Directrix is parallel to the polar axis at a distance below the pole.
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 parallel to the polar axis at a distance below the pole.
The vertex is at .
\
.