Which set of ordered pairs represents a function?
{(2,9),(5,9),(1,−6),(−5,5)}
\{(6, 6), (6, 8), (-8, -7), (-3, -8)\}{(6,6),(6,8),(−8,−7),(−3,−8)}
\{(1, 8), (9, -3), (7, -4), (7, -6)\}{(1,8),(9,−3),(7,−4),(7,−6)}
\{(-5, -1), (-3, -7), (-5, 3), (-7, -4)\}{(−5,−1),(−3,−7),(−5,3),(−7,−4)}
FIrst one .... no values of x have two values of y YES
Second one 6.6 and 6,8 means the value of x = 6 has two values for y NO
Third one 7,-4 7, -6 NO
Fouth one -5,1 -5,3 no