SOLUTION: given the parabola has a directrix of y= -3.25 and focus (0, -2.75), find the vertex and write an equation.

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Question 329975: given the parabola has a directrix of y= -3.25 and focus (0, -2.75), find the vertex and write an equation.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The distance from the vertex the focus is equal to the distance from the vertex to the directrix.
Vy-%28-3.25%29=-2.75-Vy
2Vy=-2.75-3.25
2Vy=-6
Vy=-3
(0,-3)