Question

look at this mapping diagram!
domain
6
17
-17
11
range
12
11
-14
10
-9
is this relation a function?
yes no

Explanation:

Step1: Recall function definition

A function is a relation where each domain element maps to exactly one range element.

Step2: Check domain elements

• 6 maps to 12 and 11 (two values)
• 17 maps to 12 and -9 (two values)
• -17 maps to -14 and 10 (two values)
• 11 maps to 12 and 10 (two values)

Multiple domain elements have more than one range mapping.

Answer:

no