What is the definition of domain of a relation

The video tutorial explains the concept of domain in mathematics, focusing on the relationship between input and output. It clarifies that the domain is the set of all X values or inputs in a relation. The tutorial covers how to identify the domain in different representations such as ordered pairs, mappings, tables, and graphs. It also discusses special relationships where the domain can be infinite, represented as all real numbers.

What is the domain in a mathematical relationship?

• The set of all constants

• The set of all X values

• The set of all Z values

• The set of all Y values

In a mapping representation, what does the domain consist of?

• All values less than zero

• All values greater than zero

• All input values

• All output values

How is the domain represented in a graph?

• All X coordinates

• All constant values

• All Z coordinates

• All Y coordinates

What can be said about the domain of a relationship that extends indefinitely?

• It is limited to positive numbers

• It is limited to negative numbers

• It includes all real numbers

• It includes only integers

When discussing domain, what is meant by 'all real numbers'?

• All possible values on the number line

• Only negative integers

• Only rational numbers

• Only positive integers