keinxee kyay

S = {1,2,3,4} and T = {8,9}. If the image is of each odd number in S is 9 and the image of
each even number is 8, describe the function by an arrow diagram. Write down the set of
ordered pairs for this function.

1. Let S = {1,2,3,……,20}. A relation from S to S is described by the set of ordered pairs (x,y)
   where y∈S, x∈S and y = 3x. Write down all the ordered pairs for this relation. If this function ?
   Why?