Hey sharmala.

Is this distribution Y = 1/(1+2X) instead of Y = 1 + 2X?

In any case, you have a distribution for all X belonging to all whole numbers from 0 to 4 inclusive. Now consider that Y = f(X) with the same probabilities for each value of X. So you should have a table with three rows: one is the probability, the second is P(X = x) and the final one is P(Y = y) or P(Y = f(x)).