Functions Lesson 2
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•
Mathematics
•
8th Grade
•
Hard
Frances Hale
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10 Slides • 0 Questions
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Functions Lesson 2
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Functions
A function is a rule that assigns to each value of one quantity a single value of a second quantity.
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Examples of Non-Functions
Number of minutes spent studying and grade: two students can spend 60 minutes studying and get different grades
Age and height: two people the same age can be different height
What are some other examples we can think of?
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Another way to describe functions:
A function is a relationship between a set of inputs and another set of outputs such that each input corresponds to one and only one output.
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What are the differences between these tables?
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Input-Output Machine
Functions take one input and produce exactly one output.
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Functions can sometimes be described with a rule or formula
An example of a formula is a linear equation
Decorating 2 cookies per minute: y = 2x
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Practice: Constant rate functions
Watering 4 plants every 3 minutes
Function:
Painting 3 fences each day
Function:
Decorating 5 cupcakes every 2 minutes
Function:
Functions Lesson 2
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