Mathematics

Mathematics

Problem

A ray of light coming from the point P(1,2)P(1, 2) gets reflected from the point QQ on the xx-axis and then passes through the point R(4,3)R(4, 3). If the point S(h,k)S(h, k) is such that PQRSPQRS is a parallelogram, then hk2hk^2 is equal to : (a) 70 (b) 90 (c) 60 (d) 80

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