A maximization LP led to the following simplex tableau

$\left[\begin{array}{cccccc}z& x_1& x_2& x_3& x_4& rhs\\ 1& -3& -2& 0& 0& 0\\ 0& 1& -1& 1& 0& 3\\ 0& 2& 0& 0& 1& 4\end{array}\right]$

Using $x_2$ as a free variable express an infinite set of solutions and find the corresponding direction of unboundedness vector vec$(d)$

$\left[\begin{array}{c}z\\ x_1\\ x_2\\ x_3\\ x_4\end{array}\right]=\left[\begin{array}{c}0\\ 0\\ 0\\ 3\\ 4\end{array}\right]+x_2\left[\begin{array}{c}2\\ 0\\ ?\\ ?\\ 0\end{array}\right]$ and vec$(d)=\left[\begin{array}{c}2\\ 1\\ ?\end{array}\right]$