Introduction to Functions

Front

Is the relation a function? Why?

Back

No, because the x-value 11 has two y-values pair with it.

Front

What is the definition of a function?

Back

Every input has only ONE output.

Front

What is the value of x in: f(4) = 3x - 1?

Back

11

Front

Solve for f(5): f(5) = -x + 4

Back

-1

Front

Is this graph a function or not a function?

Back

Function

Front

What is a function?

Back

A relation where each input has exactly one output.

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 function to be one-to-one?

Back

Each output is paired with exactly one input.

Front

What is a vertical line test?

Back

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