17. Using the same axes; shade the region P of all points (x,y) which satisfy the following four inequalities simultaneously:i) y ≥ 0 ii) x + 2y ≤ 4 iii) -x + 2y ≥ 1 iv) -2x + 5y ≤ 10 b) Use your diagram to find in the region P, the maximum and the minimum values of: i) x ii) 4-y