Question

Need help!!
\[A,P,Q \space and \space R \space are \space four \space points \space such \space that \space \vec{AP}=2\bold{a},\vec{AQ}=3\bold{b} \space and \space \vec{AR}=9\bold{b}-4\bold{a}.\space Show \space that \space P,Q,R \space are \space collinear.\]

Answer 1

@ganeshie8

Answer 2

@hartnn