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The ordered pairs are on a graph of direct variation. Find the missing value.  Show your work for full credit.

(-4, 3) and (x, 6

Oct 19th, 2017

Only 1 question posted

Direct variation means the ratio of one variable by the other is always the same

Suppose y = kx

k=y/x = 3/-4 

This must also be true of the second point

so 6/x = 3/-4

6/x = 6/-8    (note 3/-4  = 6/-8)

hence x = -8


Dec 17th, 2014

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