bPosition vectors/b are vectors giving the position of a point relative to the origin ((O)).

A point (A) with coordinates ((x,y)) has the position vector (\overrightarrow{OA} ).

(\overrightarrow{OA} = x\bold{i} + y\bold{j} = \begin{pmatrix} x \ y \end{pmatrix} )

mtaimg/images/topics/10/10-108-1.png/mtaimg

(\overrightarrow{AB} = \overrightarrow{OB} - \overrightarrow{OA} )

mtaimg/images/topics/10/10-108-2.png/mtaimg