Question

look at this mapping diagram:
domain
3
9
1
6
-5
15
range
10
-12
17
8
16
-9
is this relation a function?
yes
no

Explanation:

Step1: Recall function definition

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

Step2: Check domain elements

Examine each value in the domain:

• 3 maps to -9
• 9 maps to 10
• 1 maps to 17
• 6 maps to 8
• -5 maps to -12
• 15 maps to 16

Every domain value has only one corresponding range value.

Answer:

yes