Physics - Wave on String Question with Solution | TestHub

The given function should be in the form of $f\left(x\pm vt\right)$.

So, for travelling wave $y$ should be linear function of $x$ and $t$and should be finite and continuous for all values of $t$. 

$y=A\sin \left(15x-2t\right)\to$ linear function in $x$ and $t$.