Find the maximum and minimum values of the given objective function of a linear programming O problem. The figure illustrates the graph of the feasible points. (5,6] z=x+ 9y Ico) (5,2) The maximum value of z is z = and it occurs at the point (x,y) = (Type exact answers. Type integers or simplified fractions.) The minimum value of z is z = and it occurs at the point (x,y) = (Type exact answers. Type integers or simplified fractions.)