The amplitude of a sinusoidal function is the coefficient in front of the sine or cosine term. For the function:

$y = \frac{1}{7} \sin(x)$

The coefficient in front of the sine function is $\frac{1}{7}$. Therefore, the amplitude is:

$\text{Amplitude} = \frac{1}{7}$

Would you like further explanation on how amplitude works or need help with another question?

Related questions:

1. How does the amplitude affect the graph of a sine function?
2. What is the period of the function $y = \frac{1}{7} \sin(x)$?
3. How do you calculate the phase shift of a sine function?
4. What is the difference between the amplitude and the frequency of a sine wave?
5. Can you explain how to find the maximum and minimum values of this sine function?

Tip:

Amplitude always represents the "height" from the middle (or equilibrium) line to the peak of the wave.