Question

Which set of ordered pairs does NOT represent a function?

{(1, -2), (3, -4), (5, -6), (7, -8)}

{(2.3, 4.9), (3.5, 8.2), (2.3, 5.9), (5.9, 6.5)

{(6, 13), (4, 16), (2, 19), (0,0)}

{(-41, -8), (-31, -9), (-21, -16), (-11, -23)}

Answer 1

number 2