Sashiko - Hokusai #1 

I used the following sine/sinusoidal equation:

y = a sin(Fx - p) + d

where:

a is the amplitude - makes the wave taller or shorter

F is the frequency - how close the waves are together

p is the phase - shift to left or right on the x-axis

d is the displacement - up or down on the y-axis

Go to the following program for more information about this sine/sinusoidal equation
https://www.turtlestitch.org/run#cloud:Username=Elaine&ProjectName=Sine%20Wave%20Equatio