Understand and use position vectors.Including interpreting components of a position vector as the Cartesian coordinates of the point.AB→=b−a\overrightarrow{AB} = \bold{b} - \bold{a}AB=b−aNotation:OB→\overrightarrow{OB}OB or b\bold{b}br=(xy)\bold{r} = \begin{pmatrix} x \\ y \end{pmatrix}r=(xy)