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Mathematics 19 Online
OpenStudy (anonymous):

If y varies directly with x and y = -7 when x = -1, find x when y = -84. If y varies directly with x and y = -7 when x = -1, find x when y = -84. @Mathematics

OpenStudy (anonymous):

sorry, -12

OpenStudy (anonymous):

y = kx -7 = k(-1) k = 7 y = 7x - 84 = 7x x = -12

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