The statement below describes a situation in which opposite quantities combine to make 0. is the statement true or false?

a mountain biker gets halfway up a hill and realizes he forgot his water, so he returns to his starting point.

a: true
b: false

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.