Which set of ordered pairs is NOT a function ? {(3, 2) (4, 1) (5, 2) (8,8) }
{(3, 6) (2, 1) (6, 2) (5,9)}
{(7,3) (8, 2) (3,6) 7,4)}
(4.4) (5, 4) (1,4) (7,4)}

The 3rd one is not a function.

The reason why it is not a function is because for it to be a function none of the x’s can repeat and in the 3rd one the 7 repeats.

(I saw someone already answered but I decided to answer anyway so I could tell you why it is not a function incase you didn’t know)

It would be the second one because it passes the vertical line test