What is the period of the sinusoid given by y=-4 sin (2 pi/3 x) ?

The period of a sinusoidal curve can be determined through the formula : P = 2π / B where B is equal to 2π / 3. In this case, P = 2π / 2π / 3 equal to 3. The amplitude or the height of the curve is equal to - 4. The curve passes through the origin, (0,0). Answer is 3