Question

In which set of ordered pairs, (x, y), is y not a function of x?

a) {(7, 7), (4, 4), (3, 3)}

b) {(7, 4), (4, 7), (4, 3)}

c) {(4, 3), (7, 3)}

d) {(4, 3), (3, 4)}

Answer 1

Please see my previous answers to understand what a function is, and how we can find functions.

In short, we can conclude that (B) is not a function of x.