The vertex of a parabola is .

The focus of parabola is .

The vertex and focus having same -coordinate.

Therefore, the parabola is vertical.

The focus of vertical parabola is .

Equate -coordinate.

.

Since  is positive, the parabola opens up.

The vertex and focus having same -coordinate, therefore, the parabola is vertical.

is positive, the parabola opens up.