Determine if the set of ordered pairs represents a function. Explain why or why not. {(-4, 4), (-2, 2), (0, 0), (-2, -2)}

Question

Need help. If you can, can you please state what the rule is if it is a function.

Answer 1

Not a function since -2 maps to two different values, 2 and -2. The function must map uniquely.