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Mathematics
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Is the equation x + y = -5 in direct variation?
Dec 21st, 2014

No, this is not an example of direct variation. 

Direct variation occurs when the y variable is equal to a constant multiplied by the x variable. Or, in math, when y = kx. 

In this case, if you rearrange the equation, you get y = -x - 5, which is not the correct form because of the "- 5".

Dec 21st, 2014

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