#### Look at the mapping diagram and tell if the given relation shown is a function

Sangeetha Pulapaka

0

STEP 1: Recall what is a function

A function is a relation which pairs exactly each input with one output.

https://www.bigideasmath.com/protected/content/ipe/grade%206/09/g6_09_01.pdf

STEP 2: Recall what is a mapping diagram

A **mapping** shows how the elements are paired. Its like a flow**chart** for a function, showing the input and output values. A **mapping diagram** consists of a domain

( the input) and the range ( the output)

https://www.varsitytutors.com/hotmath/hotmath_help/topics/mapping-diagrams

STEP 3: Check if the given mapping diagram is a function

The given mapping diagram is a function because

- Every input is paired with at least one output.
- The domain is unique- the values in the domain are not repeated more than once

Further skills you may want to recall:

What is a relation

What is the domain and range of a relation or a function

https://www.varsitytutors.com/hotmath/hotmath_help/topics/domain-and-range

How to determine if the relation is a function or not

https://www.chilimath.com/lessons/intermediate-algebra/relations-and-functions/