The parabola is .
Rewrite the parabola as .
Compare the above equation with .
and
.
Here is positive then the parabola opens upward.
The vertex of the parabola is .
The focus of the parabola is .
The directrix of the parabola is .
Graph :
\Draw a coordinate plane.
\Plot the vertex and focus of the parabola.
\Draw the directix .
Graph the parabola .
Graph of the parabola is :