Answer
The given equation represents a linear function as it can be rewritten in the form $y=mx+b$.
Work Step by Step
The given equation is $x=3+15y$.
$\implies y=\frac{1}{15}(x-3)$
Or $y=\frac{1}{15}x+\frac{1}{5}$
All linear functions can be represented by the equations of the form $y=mx+b$.
The given equation represents a linear function as it can be rewritten in the form $y=mx+b$.