Answer: (c), (a)
Step-by-step explanation:
Given
1. It is known that the amplitude of the wave is the distance between the maximum or minimum point from the centerline
from the graph, [tex]y=1[/tex] is the line about which the distance of the maximum and minimum point is the same i.e.
[tex]\dfrac{3-(-1)}{2}=\dfrac{4}{2}=2[/tex]
option (c) is correct
2. For graph second maximum point is 4 and the minimum point is -1, the amplitude is
[tex]\Rightarrow \dfrac{4-(-1)}{2}=\dfrac{5}{2}=2.5[/tex]
option (a) is correct
