This data shows the temperatures on randomly chosen days during a summer class and the number of absences on those days. (temperature, number of absences)
(72, 3), (85, 7), (91, 10), (90, 10), (88, 8), (98, 15), (75, 4), (100, 16), (80, 5)
Find the equation of the regression line for the given data.