Domain, Range, & Evaluating Functions

Front

What is a function?

Back

A function is a relation where each input (x-value) has exactly one output (y-value).

Front

Which relation is NOT a function?

Back

A relation is not a function if any x-value is paired with more than one y-value.

Front

What is the domain of a function?

Back

The domain is the set of all possible input values (x-values) for a function.

Front

What is the range of a function?

Back

The range is the set of all possible output values (y-values) for a function.

Front

Identify the domain of the relation: {(1,-5), (3,1), (-5,4), (4,-2)}

Back

The domain is {1, 3, -5, 4}.

Front

Identify the range of the relation: {(1,-5), (3,1), (-5,4), (4,-2)}

Back

The range is {-5, 1, 4, -2}.

Front

What is the domain of the function represented by the graph?

Back

The domain is the set of x-values that the graph covers.

Front

What is the range of the function represented by the graph?

Back

The range is the set of y-values that the graph covers.

Front

How do you find the domain of a function given a graph?

Back

Look for the x-values that the graph touches or crosses.

Front

How do you find the range of a function given a graph?

Back

Look for the y-values that the graph touches or crosses.