(6) At a problem's optimal solution, a redundant constraint will have zero slack. a. True b. False (7) When two or more objective function coefficients are changed simultaneously, further analysis is necessary to determine whether the optimal solution will change. a. True b. False (8) A negative dual value indicates that increasing the right-hand side of the associated constraint would be detrimental to the objective. a. True b. False (9) For a minimization problem, a positive dual price indicates the value of the objective function will increase. a. True b. False