Relations and functions pdf
- how is a relation a function
- how is a relation a function or not
- how is a relation different from a function
- how can a relation be a function
Relations and functions notes...
Difference between relation and function with example
Difference between Relation and Function
A relation in mathematics is simply a connection or a rule that links one set of things (called the domain) to another set of things (called the range).
You can think of it as a collection of pairs that shows how items from one group are connected to items in another group.
For example, Imagine you have a list of students and their favourite subjects.
- Student A → Math
- Student B → Science
- Student A → English
Here, the relation connects students (from the domain) to their favourite subjects (from the range).
A function in mathematics is a special type of relation where each input (from the domain) is connected to exactly one output (from the range).
In simple terms, a function makes sure that one thing in the first group is linked to only one thing in the second group.
For example, Imagine you have a vending machine.
- You press Button A → It gives you chips.
- You press Button B → It gives you chocolate.
Here, each button (input) is connected to only one snack (output).
You won't press Button A and get
- how does a relation become a function
- is a relation a function worksheet