The equation of the parabola is
.
The general form of the parabola is
, where vertex is
, focus is
and directrix is
.
Compare the equation with general form.
\Here vertex is
and
.
The value of
.
Focus is
.
The focus is
.
The directrix is
.

.
Graph :
\(1) Draw the coordinate plane.
\(2) Graph the parabola equation
.
(3) Plot the vertex, focus, and the two points
and
.
(4) Draw the directrix line.
\(5) Connect the plotted points with smooth curve.
\
\
[2/2/16, 5:51 PM] Venkat Velcheti (velchetikrishna@gmail.com):
The parabola equation is
.
The vertix is
.
The focus is
.
The directrix is
.
.