Minimize the objective function 4x + 3y subject to the constraints. 2x + y = 12 x + 2y = 12 x20, y20 the vertices of the feasible set are. (type ordered pairs. use a comma to separate answers as needed.) the minimum value of the function is (simplify your answer.) the value of x is. (simplify your answer.) the value of y is . (simplify your answer.)