## Tutoring on Evaluating Expressions and Determining Function Values

Learning Objectives:

#### Understand to Evaluate Expressions and Determine Function Values.

Determining Function Values

Now that we know a function is a special relation in which each input has exactly one output we often use special notation to communicate that a relation is a function. The notation is called function notation, for example, y = f(x). So f(x) is function notation where f(x) is the output resulting from applying the function rule f to the input x. So when using function notation we need to remember that x is the input and f(x) is the output and therefore f(x) = y. When we first see this notation though it is easy to think that this means f times x, but it does not. Its special notation called function notation.

Hook Questions

 1.How to express a function? 2.What is the role of an input in a function? 3.How to find the output of a function?   Learn Determining Function Values Online One on One   Struggling with Function Values? Need help for homework? You are not the only one. Fortunately our experts in Function Values are online now and are ready to help.