Step 1:

The parabola is .

Rewrite the expression.

.

Compare the above equation with .

and .

Here is negative then the parabola opens towards left.

The vertex of the parabola is .

The focus of the parabola is .

The directrix of the parabola is .

Step 2:

Graph:

Graph the parabola .

Solution :

The vertex of the parabola is .

The focus of the parabola is .

The directrix of the parabola is .