Identifying Functions

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 is a function? A, B, C, D

Back

D

Front

What are all of the y values in a function called?

Back

Outputs

Front

What are all of the x values in a function called?

Back

Inputs

Front

Which set of ordered pairs 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)}

Front

What is the domain of a function?

Back

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

Front

What is the range of a function?

Back

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

Front

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

Back

Each input must correspond to exactly one output.

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 an example of a function?

Back

f(x) = x + 2 is a function because each input x has one output.