Which term refers to the input values of a function?

The term that refers to the input values of a function is the domain. In mathematics, the domain of a function consists of all the possible inputs for which the function is defined. For example, if you have a function that involves taking the square root of a number, the domain would only include non-negative numbers because the square root of a negative number is not defined within the real number system.

Understanding the domain is crucial because it sets the limits of what values can be used as input to the function, ensuring that the function produces valid outputs. This is a foundational concept in algebra and calculus, affecting how functions are analyzed and graphed.

The other terms do not refer to input values: the range pertains to the output values of a function, while coefficients relate to the numerical factors in algebraic expressions.