## Precalculus (6th Edition) Blitzer

Step 1. Graph the function $f(x)=int(x)$ shown as the blue line segments in the figure. Step 2. To obtain the graph of function $g(x)=3int(x-1)$, shift the original horizontally 1 unit to the right, then stretch the result vertically by a factor of 3, shown as the red line segments.