# The equation of the plane passing through the point $(2 , 1 , -1 )$ and the line of intersection of the planes $\overrightarrow{r}. (\overrightarrow{i}+\overrightarrow{3j}-\overrightarrow{k})=0$ and $\overrightarrow{r}. (\overrightarrow{j}+\overrightarrow{2k})=0$ is
$\begin{array}{1 1}(1) x+4y-z=0 &(2)x+9y+11z=0\\(3)2x+y-z+5=0&(4)2x-y+z=0\end{array}$