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Mathematics 20 Online
OpenStudy (anonymous):

If all the variables in a function change, why are some variables called independent and other variables called dependent?

OpenStudy (kirbykirby):

Because the dependent variable DEPENDS on the independent. Let me explain further by an example: Say you want to understand the relationship between people's wealth (how much money they have) and age. You might have a graph that looks like this:

OpenStudy (kirbykirby):

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