Question 16

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waecmaths question: 

If x varies inversely as y varies directly as z , what is the relationship between x and z

Option A: 

$x\propto z$

Option B: 

$x\propto \tfrac{1}{z}$

Option C: 

$x\propto {{z}^{2}}$

Option D: 

$x\propto {{z}^{\tfrac{1}{2}}}$

waecmaths solution: 

$\begin{align}  & x\propto \frac{1}{y} \\ & y\propto z \\ & x\propto \frac{1}{z} \\\end{align}$

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