on a number line, the directed line segment from Q to S has endpoints at -2 and S at 6. point R partitions the directed line segment from Q to S in the 3:2 ratio. rachel use the section formula to find the location of point R on the number line. her work is shown below. let m = 3, n = 2, x1 =-2, and x2 = 6. what is the location of point R on the number line?