Finding Domain and Range

Front

What is the domain of a relation?

Back

The set of all x-values.

Front

What is the range of a relation?

Back

The set of all y-values.

Front

What is a function?

Back

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

Front

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

Back

Identify all the x-values that the graph covers.

Front

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

Back

Identify all the y-values that the graph covers.

Front

What is the output of the function f(x) = 2x + 4 when x = 3?

Back

10

Front

What is the output of the function f(x) = x^2 when x = 2?

Back

4

Front

Which of the following is not a function: {(1,2), (1,3), (2,4)}?

Back

It is not a function because the input 1 has two different outputs.

Front

What does it mean for a graph to be a function?

Back

It must pass the vertical line test; no vertical line should intersect the graph more than once.

Front

What is the domain of the function f(x) = 1/x?

Back

All real numbers except x = 0.