Functions Pre Test

What do you call a relation where each element in the domain is related to only one value in the range by some rules?

• Function

• Range

• Domain

• Independent

Is this mapping a function or not a function? 

• Function

• Not a Function

Is this graph a function or not a function? 

• Function

• Not a Function

Which of the following does not represent a function?

Which of the following represents a function?

Which of the following is the correct definition of a function?

• A relation where each input has exactly one output

• A relation where each input has multiple outputs

• A relation where each output has multiple inputs

• A relation where inputs and outputs are the same

To determine if a graph shows a true function it must pass the ​ (a)   line test. To determine if the graph of an inverse is a function it must also pass the ​ (b)   line test. However if you have only graphed the original function (not the inverse) you can use the ​ (c)   line test to determine if the inverse is also a function.​

• VERTICAL

• HORIZONTAL

• Diagonal

• y=x

• All real numbers

• All real numbers except 2

• All real numbers except 0

• All real numbers except -2

What is the range of the function shown by the diagram?

• R:{3, 2, 1}

• R:{a, b}

• R:{3, 2, 1, a, b}

• R:{all real numbers}