The vectors OP, OQ and OR represented by a,b and c respectively: where a=10i+j, b=−2i+7j, c=a+3b, and O is the origin. OR and PR intersects at M where OM=kOR and PM=lPQ and k, l are constants. Find: (i) The equation of the lines of PQ and OR (ii) The coordinayes of the point M (iii)The values of the constants k and l