Activity 1: Understand Me Suppose you are given the following relations. S= {(a, 1), (a, 2), (a, 3), (a, 4)} T= {(x, y) ly =x+1 where r is an integer between 0 and 53 What is the set of all the first coordinates in each relation? Set S = Set T = 2. What is the set of all the second coordinates in each relation? Set S = Set T-​