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OpenStudy (anonymous):
The variables x and y vary directly and x = -3 when y = 9. Find y when x = -4.
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OpenStudy (anonymous):
ok so the direct variation is y=kx and k=-3 so plug -3 in for k and -4 in for x y=-3*-4 y=12
OpenStudy (anonymous):
thank you so much!
OpenStudy (anonymous):
yep no problem
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