Question

What would the graph of `y=1/3 cosx` look like?

Answer 1

The graph of `1/3cos(x)` looks like this:
graph{1/3cosx [-10, 10, -5, 5]}

Since it is a cosine function, it starts at its highest point, goes to zero, down to lowest point, back up to zero, then back up to highest point in a period of `2pi`
The Amplitude is `1/3` meaning the highest point is `1/3` above the midline, and the lowest point is `1/3` below the midline. The midline for this equation is `y=0`