Question

on a parabola, the extreme point (which is the highest, lowest, or farthest point left or right) is called the ___.

a. center

b. focus

c. directrix

d. vertex

Explanation:

A parabola's vertex is its extreme point (highest, lowest, etc.). The center is for other conic sections. The focus and directrix are related to the parabola's definition but not the extreme point. So, the answer is vertex.

Answer:

D. vertex