Trisect the line segment joining (-3,2) and (-7,-1).

Solution

The trisect of (x1,y1) and (x2, y2)is

x' = (x1 + 2x2)/3

y' = (y1 + 2y2)/3

x'' = (2x1 + x2)/3

y'' = (2y1 + y2)/3

So

The trisect of (-3,2) and (-7,-1) is

(-17/3, 0)

(-13/3, 1)