A rotaion of a point 90° clockwise is given by:
[tex](x,y)\rightarrow(y,-x)[/tex]
The coordinates of the original point are (1,-3), applying the rule to this point we have:
[tex](1,-3)\rightarrow(-3,-1)[/tex]
Therefore:
Point in the original figrue (1,-3)
Point in the final figure (-3,-1)
