Answer
See below.
Work Step by Step
A parabola is the set of points on the plane, such that its points are equally far from a fixed point (focus) and a fixed line (directrix).
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.