# How do you write 6x=3y+12 in function notation?

The most common form for writing a function using the variables $x$ and $y$ would be :
$\textcolor{w h i t e}{\text{XXXXX}}$$y = \text{expression in terms of } x$
$6 x = 3 y + 12$
$\textcolor{w h i t e}{\text{XXXXX}}$can be written as
$6 x - 12 = 3 y$
$\textcolor{w h i t e}{\text{XXXXX}}$or
$y = 2 x - 4$