This question has multiple parts. Therefore each part has been answered as a separate question on Clay6.com
$\begin{array}{1 1} (\large\frac{24}{29},\frac{36}{29},\frac{-48}{29}) \\(\large\frac{2}{29},\frac{3}{29},\frac{4}{29}) \\ (\large\frac{24}{29},\frac{36}{29},\frac{48}{29}) \\ (2,3,4) \end{array} $