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OpenStudy (anonymous):
The variables x and y vary directly. Use the given values to write an equation that relates x and y: x = 4, y = -16
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OpenStudy (anonymous):
HELP!!!!!!!!!!!!!
OpenStudy (anonymous):
Direct variation is a relationship between x and y of the form \[y=kx\]By substitution, we find k=-4, so\[y=-4x\]
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