P and Q be the points of trisection of the line segment joining points A(2,-2) and B(-7,4) such that P is nearer to A. Then find the coordinates of P and Q. [2Marks]
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Solution
P and Q are the points of trisection of AB, therefore AP = PQ = QB.
Thus, P divides AB internally in the ratio 1:2 and Q divides AB internally in the ratio 2:1. P=(1×(−7)+2×(2)1+2,1×(4)+2×(−2)1+2) =(−7+43,4−43) =(−33,03) =(−1,0) [1Mark]