can you help me with some questions?
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determine which of the relations are functions {(2, 7), (1,5), (0,3), (1,1), (2,1)}
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There's a certain part in functions that im not familiar with. Domains and ranges, i don't understand them.
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A function is like a machine: it has an input and an output.
Math is Fun

Using this virtual manipulative you may:
* Graph a function
* Trace a point along the graph
* Dynamically vary function parameters
* Change the range of values displayed in the graph
* Graph multiple functions
* Restrict the domain of a function
* Zoom in on a region of the graph
National Library of Virtual Manipulatives

A step by step tutorial, with detailed solutions, on how to find the domain and range of real valued functions is presented. First the definitions of these two concepts are presented. A table of domain and range of basic functions might be useful to answer the questions below.
Domain and Range of a Function

Graphing cubic functions. Any function of the form f(x) = x^{3} is referred to as a cubic function.
University of Georgia's, Jim Wilson's
