# If y varies directly with x, if y=8 when x=3 how do you find the direct variation equation?

$y = \frac{8}{3} x$
It is told that y varies x, means $y \propto x$
$\Rightarrow y = k x$
$\Rightarrow 8 = k . 3$
$\Rightarrow k = \frac{8}{3}$
Hence $y = \frac{8}{3.} x$