Question

Which set of ordered pairs does not represent a function?

○ {(0, 6), (9,-3), (0,9), (6,-5)}
O{(-7,0), (7,0), (-2,-8), (-8,-1)}
O {(7,-6), (-7, -1), (-8, 0), (3,0)}
O {(2,0), (7,6), (-5, 6), (1, -7)}

Answer 1

Answer: A function has to return a unique value when given an argument. In the last set {(–2,1),(3,–4),(–2,–6)}, the argument -2 is supposed to return both 1 and -6 : this is not possible for a function.