Question

16/20
does this relation represent a function?
(1,5), (1,6), (1,7), (1,8), (1,9)
yes
no

Explanation:

Step1: Recall function definition

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

Step2: Analyze given relation

The input $x=1$ is paired with $y=5, 6, 7, 8, 9$ (multiple outputs).

Answer:

No