Question

Which set of ordered pairs does not represent a function?

{(8,−4),(−5,6),(−5,7),(−3,−5)}
{(-1, 0), (1, 0), (3, -2), (2, -9)
{(3, -7), (-2, -9), (9, 3), (7, -7)
{(8, -9), (-3, 9), (-9, 2), (-2, 0)\}

Answer 1

{(8,−4),(−5,6),(−5,7),(−3,−5)}

Explanation:

because for any domain ,you will get only one range value ,

but ,there are two range values for -5 in A;