function or not a function

Front

What is a function?

Back

A function is a relation where each input has exactly one output.

Front

What is not a function?

Back

A relation where an input can have multiple outputs.

Front

What line test must a function pass?

Back

The vertical line test.

Front

If f(2) = 4, how can this be represented as an ordered pair?

Back

(2, 4)

Front

What is the output of f(1) if f(x) = 2x + 1?

Back

f(1) = 3

Front

What does it mean if a graph fails the vertical line test?

Back

It means the relation is not a function.

Front

Can a function have the same output for different inputs?

Back

Yes, a function can have the same output for different inputs.

Front

What is the domain of a function?

Back

The set of all possible input values.

Front

What is the range of a function?

Back

The set of all possible output values.

Front

What is an example of a function?

Back

f(x) = x + 2 is a function.