# What is the direct variation equation if y varies directly with x, and y=7.5 when x=2.5?

##### 1 Answer
Nov 1, 2014

$y = k x$

$\implies 7.5 = k \left(2.5\right)$

$\implies 7.5 = 2.5 k$

$\implies k = 3$

$\implies y = 3 x$