True or false 1 -

The point (3,2) is feasible for the constraint 2x1 + 6x2 <=30 *

2 -

When an LPP involves two variables and has an equality constraint, the feasible region may be a segment of a straight line *

3 -

Sensitivity analysis tests the optimality of the present solution when some parameter values in the model have been changed *

4 -

The unbounded solution can happen in both maximization and minimization problems *

5 -

A range of feasibility 50 <= b1 <= 75 means the corresponding shadow price remains constant in this range. *