PQRS is a parraellelogram. The postion vectors of P,Q,R and S are , respectively: p=-3k, q=i+yj, r=5i+2xj+k and s=yi-2k. The values of x and y are?
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Originally Posted by johnsy123 PQRS is a parraellelogram. The postion vectors of P,Q,R and S are , respectively: p=-3k, q=i+yj, r=5i+2xj+k and s=yi-2k. The values of x and y are? Draw a diagram. Get an expression for the vectors PQ and SR. Equate them and hence get two equations in x and y. Solve simultaneously. If you need more help, please show all your work and say where you get stuck.
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