Domain of a function

The  exercise appears under the Algebra I Math Mission. This exercise connects the domain of a function with it's rule.

Types of Problems
There is one type of problem in this exercise:


 * 1) Find the domain of the function: This problem has a function that is written in a rule form. The student is asked to use the rule to find the domain of the function and then make the correct selection from a multiple choice list.Doaf1.png

Strategies
Knowledge of function vocab and terminology is encouraged to perform this exercise accurately and efficiently.
 * 1) The domain of a function is the x-values that are allowed to be used. Oftentimes, the domain will be stated as "not" the numbers that are not allowed to be used.
 * 2) Domain questions often come to not dividing by zero and not taking the even root of negative numbers.
 * 3) There is an option for "None of the answer choices" so it is important to read the function very carefully.

Real-life Applications

 * 1) The domain of a function assists in constructing models to represent real-life situations. For example, a model for the area of a garden cannot take on negative side lengths.