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### 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

- Graph the “mileage” function
- Write the equation that represents the data

Functions

- 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.

Functions

- Vertical Line Test (VLT)
- What is the definition if the VLT?
- How and why is it used?

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