Answer:
Changing value of "b" changes the period of the cosine graph.
Step-by-step explanation:
Question says to find about how does the b-value affect your cosine graph.
General equation of cosine function can be given as:
[tex]y=a\cdot\cos\left(bx-c)\right)+d[/tex]
In that formula, value of "[tex]\frac{2 \pi}{b}[/tex]" gives period.
So changing value of "b" changes the period of the cosine graph.
