Determine if Set of Points is a Function which set of ordered pairs represents a function: {(3,6),(3,1),(9,0),(2,2)}, {(2,−5),(−3,6),(−1,−8),(−3,−4)}, {(4,−7),(−2,−1),(−7,4),(9,−1)},{(3, 8),(−2,−9),(1,4),(1,9)}

{(−2,−1),(−7,4),(9,−1)} Represents a function.

A function is a relation in which no two ordered pairs have the same input (or x-values) and different outputs (y-values).

Whenever you're trying to determine whether a given relation is a function, observe whether each first element (or input) correspond with EXACTLY ONE second element (or output).

Out of all the given options, the relation, {(−2,−1),(−7,4),(9,−1)} each x-coordinate corresponds exactly to one y-coordinate.

Therefore, the correct answer is {(−2,−1),(−7,4),(9,−1)} .