Question 282330
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*[tex \Large y] varies directly as *[tex \Large x] 


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ y\ =\ kx]


*[tex \Large y\ =\ 6] when *[tex \Large x\ =\ -9]


 
*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 6\ =\ -9k]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ k\ =\ -\frac{2}{3}]


So:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ y\ =\ -\frac{2}{3}x]


John
*[tex \LARGE e^{i\pi} + 1 = 0]
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