A function and the graph of a feasible region are given. f = -x + 5y 12 8 y (5,10), 4 8 (10,6) 12 x Find both the maximum and minimum values of the function, if they exist, and the point at which each occurs. (If an answer doe not exist, enter DNE.) The maximum value of the objective function is The minimum value of the objective function is which occurs at (x, y) = which occurs at (x, y) =

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