Question

identify whether each set of ordered pairs is a function or is not a function. {(1,3), (1,5), (4,9), (6,13)}

Explanation:

Step1: Recall function definition

A relation is a function if every input (x-value) has exactly one output (y-value).

Step2: List all x-values

The x-values from the ordered pairs are: $1, 1, 4, 6$

Step3: Check for repeated x-values

The x-value $1$ appears twice, paired with $3$ and $5$. This means one input has two different outputs.

Answer:

Not a function