Question

Which of the following is NOT a function?

A. (1,4), (3,5), (4,8), (6,9)
B. (2,4), (2,5), (3,8), (3,9)
C. (1,6), (2,6), (3,6), (4,6)
D. (12,48), (13,55), (14,88), (19,135)

Answer 1

B is not a function. A function cannot have the same input and have to different outputs. In the answer B, it says that when you put in 2, you'll get 4 and 5 out. That means it's not a function. An input cannot have more than one output.

Answer 2

so wats the answer