Is $y=x-4$ a direct variation? If so, what is the constant of variation and the slope of the direct variation model?
On direct variation
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graphing-functions
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0Yes. The slope is 1, and I believe the constant is -4. – 2012-12-06
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1To others: "direct variation" is a phrase used in some high school math textbooks (e.g. mine, unfortunately) to describe linear equations. – 2012-12-06