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Find the distance between the pair of points a(-1,8) and b(-8,4)

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?

Three students, javier, sam, and corrine, participated in a fundraiser where people donated a certain amount of money per lap that the student ran. each student also had some initial donations that were collected before the run. the equations that represent each student's total donation, y, based on the number of laps ran, x, is shown below. match each equation with the correct rate of change for that student.