Real-life situations can help us understand the ideas of domain and range in functions. They show us how limits and outcomes work in everyday life.

• Domain (Input Values):

  • For example, the age of a person can be anywhere from 0 to about 120 years. So, the domain is $[0, 120]$.

• Range (Output Values):

  • If we look at the height of students in a school, it usually goes from 1.2 meters to 2.0 meters. This gives us a range of $[1.2, 2.0]$.

When we think about these real situations, we can see how domain and range show us the possible inputs and outputs of functions.