Question

In which of the following $x$ and $y$ vary directly with each other. For each direct variation, what constant of variation.
$y=\frac{3}{4}x$

Answer 1

$y=kx$ direct variation

$\frac{y}{x}=k$

$k$ is the constant variation

$y=\frac{3}{4}x$

$\frac{y}{x}=\frac{3}{4}$

$\therefore$ variation constant $=\frac{3}{4}$