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### enumeration approach

substituting the coordinates of each corner point into the objective function to determine which corner point is optimal

### feasible solution space

the set of all feasible combination of decision variables as defined by the constraints

### graphical linear programming

graphical method for finding optimal solutions to two-variable problems

### range of feasibility

range of values for the RHS of a constraint over which the shadow price remains the same

### range of optimality

range of values over which the solution quantities of all the decision variables remain the same

### redundant constraint

a constraint that does not form a unique boundary of the feasible solution space

### sensitivity analysis

assessing the impact of potential changes to the numerical values of an LP model

### shadow price

amount by which the value of the objective function would change with a one-unit change in the RHS value of the constraint.

### simplex

a linear programming algorithm that can solve problems having more than two decision variables

### surplus

when the values of decision variables are substituted into a greater than or equal to constraint the amount by which the resulting value exceeds the right-hand-side value.