# If y varies inversely with x, and y=15 then x=5, what is the value of the constant of variation?

Aug 7, 2016

$k = 75$

#### Explanation:

$y = \frac{k}{x}$ where $x = 5$ and $y = 15$ are variables and $k$ is constant
or
$k = x y$
or
$k = \left(15\right) \left(5\right)$
or
$k = 75$