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Mathematics 7 Online
OpenStudy (anonymous):

its -7+9y+7=2x a direct variation

OpenStudy (accessdenied):

Notes for this problem: y = kx is a direct variation of y and x, where k is the constant of variation. If you simplify the left-hand side, you will have 9y. 9y = 2x. We can see that if we solve for y, we will have no constant term, so it will be in the form y=kx, a direct variation.

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