Question

Which of the sets of ordered pairs represents a function?

A = {(−5, 5), (−2, 2), (2, −2), (5, −5)}

B = {(4, 2), (3, −2), (9, 4), (11, −3)}

Answer 1

(x,y)
if x repeats with a differnt y then it is not a function


A. none of them repeat, it's a function
B. none of them repeat, it's a function

both of them are functions