Question

look at this mapping diagram:
domain
13
4
-2
8
0
range
8
-8
15
14
9
is this relation a function?
yes
no

Explanation:

Step1: Recall function definition

A relation is a function if every element in the domain maps to exactly one element in the range.

Step2: Check domain elements

Verify each domain value:

• 13 → 8 (one mapping)
• 4 → 15 (one mapping)
• -2 → -8 (one mapping)
• 8 → 14 (one mapping)
• 0 → 9 (one mapping)

All domain elements have only one corresponding range value.

Answer:

yes