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Math

Functions

  A function is like a machine. You put in one number, and it transforms it into another number using a preset rule.
For example: y = 2x is a function where you put a number x into the machine, and it outputs a number y which is twice as big as x.

Introduction to functions from the Khan Academy

NOTE: All Khan Academy content is available for free at www.khanacademy.org


Need additional help & practice problems?  Try Virtual Math Lab

 

 

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