Question

I have to draw a wave on a separate sheet of paper given the following measurements down below. I'm a bit confused, do I just use a ruler and make the crest 1 cm long across along with the trough and wave length like I did in the pic. Did I do it correctly?
Wave #1:
1 cm Crest
1 cm Trough
2 cm Wavelength

Answer 1

You have to draw a mathematical spatial axes .in order to judge is it right or not .. well you have to draw the crest and trough both of 1 cm in length and the total wavelength (same phase on the wave of 2 cm ) something like this