P P\,P is the point (5,4)(5, 4)(5,4) and Q Q\,Q is the point (8,1)(8, 1)(8,1). Write down as a column vector PQ⃗\vec{PQ}PQ.
R R\,R is the point (−1,3)(-1, 3)(−1,3) and S S\,S is the point (2,−4)(2, -4)(2,−4). Write down as a column vector RS⃗\vec{RS}RS.