Question

question which set of ordered pairs does not represent a function? answer { (0, - 4), (3, - 2), (7, - 4), (-2,2) } { (-7, - 8), (-1,6), (-4, - 4), (-9, - 2) } { (-8,3), (-4,2), (2, - 8), (-4,9) } { (2,1), (9,1), (-6, - 1), (-2,9) }

Explanation:

Step1: Recall function definition

A function has one - to - one or many - to - one mapping, i.e., for each input (first element of ordered pair), there is exactly one output (second element of ordered pair).

Step2: Check each set

For the set $\{(-8,3),(-4,2),(2, - 8),(-4,9)\}$, the input $x=-4$ has two different outputs $y = 2$ and $y = 9$.

Answer:

$\{(-8,3),(-4,2),(2, - 8),(-4,9)\}$