What is the domain of a linear function?
Understand the Problem
The question is asking for the range of input values (domain) that can be used in a linear function. In general, linear functions can take any real number as an input.
Answer
All real numbers
The domain of a linear function is the set of all real numbers.
Answer for screen readers
The domain of a linear function is the set of all real numbers.
More Information
Since linear functions are defined for all real numbers, any real value substituted for x results in a valid output.
Tips
It is a common mistake to confuse the domain with the range. Always remember, the domain refers to the x-values (input) and for linear functions, this is always all real numbers.
Sources
- What is the domain and range of a linear function? | Socratic - socratic.org
- The domain and range of a linear function - CK-12 - ck12.org
- Cuemath article on linear functions - cuemath.com
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