Question

look at this mapping diagram:
domain
3
-18
4
range
0
3
8
is this relation a function?
yes
no
submit
work it out

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: Check domain elements

• Domain element \( 3 \): paired with one range element.
• Domain element \( -18 \): paired with one range element.
• Domain element \( 4 \): paired with one range element.

Each domain element has only one range pairing.

Answer:

yes