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26-11-2018
Mathematics

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which equation represents a proportional relationship a)y=5+x ,b) y=4x, c)y=7x2 ,d)y=2-x

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26-11-2018

If x and y are proportional then the quotient y and x is constant.

[tex]\dfrac{y}{x}=a=constant[/tex] multiply both sides by x

[tex]y=ax[/tex]

Your answer is b) y = 4x

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