Find an equation of a parabola with a vertex at the origin of directrix y = -2.5

Step-by-step explanation:

Since the directrix is , it means the axis of the parabola is parallel to the y-axis.

Also, the vertex is at the origin so the parabola opens upwards.

The equation of a parabola with these properties is of the form , where ,that is the distance between the vertex and the directrix.

.

Since the parabola opens upwards, we choose .

The equation of the parabola now becomes,

Or

See graph

ian gone lie this got me confused

step-by-step explanation:

the answer is b.

step-by-step explanation:

identity property is where 0+whatever number=whatever number. basically 0+ a number.