Find the ratio in which the point P(11, y) divides the line segment joining the points A(15,5) and B(9, 20). Also, find the value of y.
+36915 11 is 4 / 6 of the way from x = 15 to x = 9 4/6 to 2/6 = 2:1 (or 1:2 going the other direction)
4/6 of the way from 5 to 20 is 15 = y
