Week 5 DQ 4 - you put in is the x, and what comes out is...

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Week 5 Discussion Question: What is a Function Post to the Main Forum. Address the following: What is a function, in your own words? Give an example of a function using the variable x and explain how we evaluate a function for a given value of x. Yes, all of them are. Since they all pass the vertical line test, they are considered functions. There is only one output for each input, so it’s ALWAYS a function. The only except is x=a functions. They do not pass the vertical line test, but are considered linear. It is a machine in which you put something in and delivers something out. The thing
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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=2x-1 This is a function f(x)=2x-1 This is in function notation If we wanted to evaluate it for x=2, we would do: f(x)=2x-1 f(2)=2(2)-1 f(2)=4-1=3...
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Week 5 DQ 4 - you put in is the x, and what comes out is...

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