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OpenStudy (anonymous):
Given that y varies directly with x, use y=9, x=3 to write a direct variation equation that relates x and y. I totally forgot how to do direct variation, please help!
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OpenStudy (aripotta):
y = kx do some substituting. 9 = 3k solve for k. k = 3 substitute 3 for k in the original. y = 3x
OpenStudy (anonymous):
Thank you!
OpenStudy (aripotta):
does that make sense? do you remember now?
OpenStudy (anonymous):
Yeah it makes more sense, thank you again!
OpenStudy (aripotta):
no problemo :)
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