Functions Lessons A - C Online

Front

What is the definition of a function?

Back

Every input has only ONE output.

Front

Is this graph a function or not a function?

Back

Function.

Front

Is this mapping a function or not a function?

Back

Not a Function.

Front

All of the x values or inputs are called what?

Back

Domain.

Front

All of the y values or outputs are called what?

Back

Range.

Front

What is the domain of a function?

Back

The set of all possible input values (x-values).

Front

What is the range of a function?

Back

The set of all possible output values (y-values).

Front

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

Back

Each input is related to exactly one output.

Front

What is a vertical line test?

Back

A method to determine if a graph represents a function; if a vertical line crosses the graph more than once, it is not a function.

Front

What is an example of a function?

Back

f(x) = 2x + 3, where each x has a unique y.