Relations, Functions, Domain and Range

​Domain/Range

​Function/Relation

​Unit 3

Relations have many input and output values (x and y)​

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Functions have only one input for each output (aka the x values never repeat)​

​Relation and Function

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Mapping​s show the arrows from x to y values

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If two arrows go from one x-value, it is not a function​

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​Mapping

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Multiple Choice

Is the following map a function or relation?

• function

• relation

If you draw a vertical line through any place on the graph and it hits two points​, it is not a function

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​Some text here about the topic of discussion.

​Vertical Line Test

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Multiple Choice

Is the following graph a function or not?

• not a function

• function

Multiple Choice

What is the domain of the table?

• {-1, 0, 1, 2, 3}

• {3, 6, 9, 12, 15}

Use brackets {​ } and list the numbers from least to greatest

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Do NOT list repeated numbers​

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​Writing Domain and Range

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Multiple Choice

What is the range of the function?

• {-2, -1, 0}

• {-5, -3, -1, 3, 5}

Multiple Choice

Is the relation a function?

• no

• yes

Multiple Choice

Is the relation a function?

• yes

• no

Multiple Choice

What is the range of the function?

• {2,3,4,5}

• {8,9,10,11}

Multiple Choice

Is the mapping a function?

• no

• yes

Multiple Choice

What is the range?

• {1,2,2,5}

• {0,1,2,4}

• {1,2,5}

• {5,2,1}

Draw

Draw a graph of a function.

Draw

Draw a graph of a relation

Poll

How confident do you feel about domain, range, relation, and functions?

• Great! I understand it!

• Ok. I still might need some help.

• Not good. I need help