Which relation is a direct variation that contains the ordered pair open paren 2 comma 7 close paren ?

A direct variation has the form y = kx. Using the point (2, 7), find k = 7 ÷ 2 = 7/2, so the relation is y = (7/2)x. Choice A, y equals seven-halves x, is the direct variation that contains the point.

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