Function or Not

Front

What is the definition of a function?

Back

A function is a relation where every input has only one output.

Front

Which of the following sets of values is a function? (9,5) (10,5) (9,-5) (10,-5), (3,4) (4,-3) (7,4) (3, 8), (6,-5) (7, -3) (8, -1) (9, 1), (2, -2) (5, 9) (5, -7) (1, 4)

Back

(6,-5) (7, -3) (8, -1) (9, 1) is a function.

Front

Is this graph a function or not a function? (Graph shown)

Back

Function.

Front

Is this graph pictured a function? (Graph shown)

Back

Yes.

Front

Is this mapping diagram a function or not a function? (Diagram shown)

Back

Function.

Front

What is an input in a function?

Back

An input is a value that is put into a function to get an output.

Front

What is an output in a function?

Back

An output is the result obtained from a function after applying an input.

Front

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

Back

A one-to-one function means that each input has a unique output and no two inputs share the same output.

Front

What is the vertical line test?

Back

The vertical line test is 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

Can a function have the same output for different inputs?

Back

Yes, a function can have the same output for different inputs, as long as each input has only one output.