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Mathematics 9 Online
OpenStudy (anonymous):

which equatin does not represent a direct variation

OpenStudy (solomonzelman):

Direct variation is in a form of y=kx, where k is a number. in such a direct variation: 1) As x increases y also increase, and CONVERSELY as x decreases y also decreases. 2) It has to contain a point (0,0) in it.

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