Step 1: \ \

The vertex of parabola is $\"\"$ . \ \

Directrix is $\"\"$ \ \

Since the directrix is in $\"\"$ form, then the parabola is vertical. \ \

Standard form of parabola is $\"\"$ \ \

where $\"\"$ , $\"\"$ is vertex , focus at $\"\"$ and directrix is $\"\"$ . \ \

$\"\"$ \ \

Substitute $\"\"$ in above equation. \ \

$\"\"$ \ \

Step 2: \ \

Substitute $\"\"$ and $\"\"$ in $\"\"$ . \ \

$\"\"$

$\"\"$ \ \

The parabola equation is $\"\"$ . \ \

Solution: \ \

The parabola equation is $\"\"$ . \ \