Direct and Inverse Proportion

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Question 37

The table shows pairs of values for $x\,$ and $y$

$x$	3	5
$y$	54	150

i.

Tick the correct statement below.

$\propto x$ .....
$\propto x^2$ .....
$\propto x^3$ .....

[2]

ii.

Write a formula for $y\,$ in terms of $x$

[2]