The parabola equation is .
The standard form of the parabola with vertex at and directrix is .
Write the equation in standard form of parabola.
Consider .
.
Compare the above equation with .
Vertex of the parabola is .
.
Focus of the parabola : .
The parabola equation is .
Since p is negative, the parabola opens down ward.
Draw a coordinate plane.
Plot the vertex and focus.
Graph the parabola .
Graph :
Vertex of the parabola is .
Focus of the parabola : .
Graph of the parabola is :
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