Identifying Functions

Front

How do you determine if a relation is a function?

Back

The vertical line test crosses only one point on the graph.

Front

Is the following graph a function?

Back

Yes, because the x never repeats.

Front

Is this is a function or not a function?

Back

Not a Function

Front

What is the definition of function?

Back

Every input has only ONE output.

Front

Is this graph a function or not a function?

Back

Function

Front

What is the vertical line test?

Back

A method to determine if a graph represents a function by checking if a vertical line crosses the graph at more than one point.

Front

What does it mean for a function to be one-to-one?

Back

Each output is paired with exactly one input.

Front

Can a function have the same output for different inputs?

Back

No, a function must have unique outputs for each input.

Front

What is a domain in a function?

Back

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

Front

What is a range in a function?

Back

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