i drew the contraint lines, now how do i draw the objective lines. Also how do i come up with optimal solution graphically and numerically with the optimal objective value.

2. (25 points) Solve the following linear program using the graphical method. To receive full crodit you must: - Draw all construints, labeling each (e.g. c1) - Shade all areas which are infeasible. - Draw at least 2 objective lines, indicating the direction of improvement. - If possible: - The point (s) at which the solution is optimal (graphically) - The point(s) at which the solution is optimal (numerically) - The optimal objective vaime 12x1+6(0)=20600 x1=1700 x4=3400 4x1+15(0)=25.200 x1=2800 x4=1680