Question

question 7 of 10
how many foci does the graph of a hyperbola have?
a. 0
b. 2
c. 1
d. 3

Explanation:

A hyperbola is defined as the set of all points in a plane such that the absolute value of the difference of the distances from two fixed points (foci) is constant. By its very definition, a hyperbola has two foci.

Answer:

B. 2