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Unformatted text preview: you put in is the x, and what comes out is the y. The y is dependent on the x, meaning x is the independent variable, and y is the dependent variable. The function is ONLY a function when there is one in and one out. There can't be 2 things coming out for one thing going in. This concept of things going in and out is called the input and output. y=2x1 This is a function f(x)=2x1 This is in function notation If we wanted to evaluate it for x=2, we would do: f(x)=2x1 f(2)=2(2)1 f(2)=41=3...
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 Spring '09
 mcmillian
 Math, Thing, The Independent, vertical line test, Main Forum.

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