An inhibitor is added to the enzymatic reaction at a level

Question

An inhibitor is added to the enzymatic reaction at a level of1 gm/L. The following data was obtained for Km = 9.2 gm S(substrate)/L
    v                       [S]
  0.909                  20
  0.658                  10
  0.493                  6.67
  0.40                    5
  0.333                 4
  0.289                 3.33
  0.227                 2.5
(a) Is the inhibitor competitive or non-competitive?
(b) Find KI