Question

Which of the following is NOT a function.

a. {(2,3), (4,7), (8,6)}
b. {(2,2), (4,4), (8,8)}
c. {(2,3), (4,3), (8,3)}
d. {(2,3), (2,7), (8,6)}

Answer 1

d

Explanation:

the x axis repeated with the 2