I NEED HELP ASAP!! Write an expression that models the difference between your brother's earningsspand your
sister's earnings for a week during which he works h hours, your sister works n hours, and your
sister earns t dollars in tips. (Hint: Be sure to consider the fact that you do not know who earns
more money!)

the line of

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.