Question

question 2 of 10
which graph or graphs appear to show a sinusoid?
i
ii
iii
a. i and ii only
b. ii only
c. iii only
d. i only

Explanation:

A sinusoid is a smooth, periodic wave-shaped graph that follows the form of a sine or cosine function. Graph I and Graph II both show continuous, smooth, repeating wave patterns that match this definition. Graph III has a disjointed, step-like shape that is not a smooth periodic wave, so it is not a sinusoid.

Answer:

A. I and II only