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OpenStudy (anonymous):
Write the direct variation of the equation if y varies directly with x and y = 45 when x = 9 i suck at math clearly
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OpenStudy (anonymous):
y=5x
OpenStudy (anonymous):
For direct, y=kx. All you need to do is sub in the values to work out what k is. 45=9k k=5 The equation must be y=5x
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