Question

look at this mapping diagram:
domain
-13
12
18
17
range
18
8
is this relation a function?
yes
no

Explanation:

Step1: Recall function definition

A function is a relation where each element in the domain is paired with exactly one element in the range.

Step2: Analyze domain elements

• Domain element \(-13\): Check its mappings. It maps to \(18\) (one mapping).
• Domain element \(12\): Check its mappings. It maps to both \(18\) and \(8\) (two mappings).
• Since \(12\) in the domain is paired with more than one element in the range, the relation does not satisfy the function definition.

Answer:

no