Identifying Functions

Front

Is this a function or not a function?

Back

Not a Function

Front

Is the relation a function? Why?

Back

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

Front

Which graph is NOT a function?

Back

Graph 1

Front

What is the definition of a function?

Back

Every input has only ONE output.

Front

Which graph is a function?

Back

Graph 1

Front

What is a function?

Back

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

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 vertical line test?

Back

If a vertical line intersects a graph at more than one point, it is not a function.

Front

Give an example of a function.

Back

f(x) = 2x + 3 is a function.

Front

What is a relation?

Back

A set of ordered pairs (x, y).