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# Functions - PowerPoint PPT Presentation

Functions. Algebra. Functions. Definitions Relation – a set of coordinate points (x, y) Domain – the x-values, input Range – the y-values, output Function – a relation where for every value of the domain the is exactly one value of the range. Functions. Domain (Student’s Name).

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## PowerPoint Slideshow about ' Functions' - gaye

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Presentation Transcript

### Functions

Algebra

Definitions

Relation – a set of coordinate points (x, y)

Domain – the x-values, input

Range – the y-values, output

Function – a relation where for every value of the domain the is exactly one value of the range

Domain

(Student’s Name)

Range

A

B

C

Roscoe

Julia

Dan

Felicity

Lucas

Student’s Name

Domain

(gallons used)

Range

(miles traveled)

2

5

7

10

13

36

90

116

180

234

• Graph the “mileage” function

• Write the equation that represents the data

• What does the graph of a function look like?

• What does it NOT look like?

• Give examples of graphs that are functions.

• Give examples of graphs that are NOT functions.

• Vertical Line Test (VLT)

• What is the definition if the VLT?

• How and why is it used?