Question

on a parabola, the extreme point (which is the highest, lowest, or farthest point left or right) is called the ____. a. directrix b. vertex c. center d. focus

Explanation:

The vertex of a parabola is its extreme - point, which can be the highest, lowest, or the farthest left or right point. The directrix is a line related to the parabola's definition in terms of distances. The center is not a term used for parabolas (it's for circles, ellipses, etc.). The focus is a point related to the parabola's definition but not the extreme - point.

Answer:

B. vertex