Agroup of seven women and six men must select a four-person committee.

how many committees are possible if it must consist of the following?

(a) two women and two men
(b) any mixture of men and women
(c) a majority of women

answer:

c. the third graph

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.