How can I determine whether a given graph represents a function?

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How can I determine whether a given graph represents a function?

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Answer 1 · 2016-06-03T10:57:50

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Explanation:

Consider the equation $y = m x + c$ $y=mx+c$

You can give any value you chose to $x$ $x$ and the value of $y$ $y$ depends on what value you give to $x$ $x$

So $y$ $y$ is the dependant variable and $x$ $x$ is the independent variable.

What you looking for is this: if the independent variable only maps to one value in the dependant variable then the equation/graph is that of a function.

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How can I determine whether a given graph represents a function?

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