Question 731067
graph y=2sin(4x)
equation for sin function: y=Asin(Bx-C), A=amplitude, Period=2π/B, Phase shift=C/B
For given equation:  y=2sin(4x)
Amplitude=2
B=4
Period=2π/B=2π/4=π/2
1/4 period=π/8
C=0
Phase shift: none
..
Graphing:
coordinates for one period:
(0,0), (π/8,2), (π/4,0), (3π/8,-2), (π/2,0) 
Note: you did everything right except you need to read the scale of the x-axis in radians.
For example, π/8≈0.3926...radians, 3π/8≈1.1780...radians, etc.