y = sin (kx − ωt)
Of course y(x,t) = sin (kx − ωt) is a graph in three dimensions, one of which is time. We can plot it in three spatial dimensions (or at least a 2D view of three dimensions). In the animation below, we combine the two views. At different times, we show a series of snapshots y(x) as grey curves, but we separate these along the graph's t axis. The resultant gives an impression of the three dimensional plot.