3. Determine whether the following sets of ordered pairs represent a functional relationship.
Justify your answer.
a) R = {(2, 4), (3, 8), (-2, 6)}
Yes it is a function.
Since there is one value of y for every value of x in
{(2,4), (3,8), (-2,6)}
b) T = {(3, 2), (4, -1), (5, 8), (3, -2)}
c) L = {(3, 5), (1, 2), (2, 2), (3, 5)}