Exercise 3-3-5.1. Use the simplex procedure to solve min subject to -x + y 2 -2 y 2-6, ry0 2. Draw a graphical representation of the problem in x, y space and indicate the path of the simplex steps. 3. Repeat the problem above but using the new objective function z =-x + y. This problem has multiple solutions, and so find all the vertex solutions and write down an expression for the full set of solutions. 4. Solve the following problem, and graph the path followed by the simplex method: min z=-x-y subject to 2x - y 2 y-I, x+y r,y0