**16.0:** Students understand the concepts of a relation and a function, determine whether a given relation defines a function, and give pertinent information about given relations and functions.

**17.0:** Students determine the domain of independent variables and range of dependent variables defined by a graph, a set of ordered pairs, or a symbolic expression.

**18.0:** Students determine whether a relation defined by a graph, a set of ordered pairs, or a symbolic expression is a function and justify the conclusion.

## Today's Objective

Students will be able to identify the function of two-step number crunching machine.