would you please help me out?

(Linear programing)

(10 points) Let F = {x : Ax-b) be the feasible set of an LP. Suppose-E F, A(z) = { 2,4, 5,7) and -4 2 0 4 -2 Aa(z) =1-6 0-3 3 5 Find a direction p along which the residual of the 5th constraint increases, but all the other active residuals remain the same. What is the active set A(z +ap) when a > 0 is tiny? (10 points) Let F = {x : Ax-b) be the feasible set of an LP. Suppose-E F, A(z) = { 2,4, 5,7) and -4 2 0 4 -2 Aa(z) =1-6 0-3 3 5 Find a direction p along which the residual of the 5th constraint increases, but all the other active residuals remain the same. What is the active set A(z +ap) when a > 0 is tiny