The equation of the conic is
.
(a)
\
Divide the numerator and denominator by 3.
\ 
.
The equation is of the form
.
Compare the equations, eccentricity
and
. \ \
Eccentricity of the conic is
.
(b)
\As
, conic is hyperboola.
(c)
\Directrix of the conic
is
.
The value in the numerator is
.

Directrix of the conic
is
.
Vertices occur when
and
.
When
then
.
When
then
.
(d)
\Graph:
\Graph the ellipse
. \ \
The vertices at the points
and
.
Draw the directrix line
.
.gif\")
(a) Eccentricity of the conic is
.
(b) Conic is hyperbola.
\(c) Equation of the directrix is
.
(d) Graph of the ellipse
is \ \
.