Solve the Following LP Problem Graphically Using Level Curves

Short Answer

Solve the following LP problem graphically using level curves.
$$\begin{array} { l l } \text { MAX: } & 5 X _ { 1 } + 3 X _ { 2 } \\\text { Subject to: } & 2 X _ { 1 } - 1 X _ { 2 } \leq 2 \\& 6 X _ { 1 } + 6 X _ { 2 } \geq 12 \\& 1 X _ { 1 } + 3 X _ { 2 } \leq 5 \\& X _ { 1 } X _ { 2 } \geq 0\end{array}$$