For a short time after a wave is created by wind, the height of the wave can be modeled using y = a sin 2πt/t , where a is the amplitude and t is the period of the wave in seconds.

part 1: write an equation for the given function given the amplitude, period, phase shift, and vertical shift.
amplitude = 4 , period = 4π , phase shift = -4/3 π , vertical shift = -2

part 2: write an equation for the given function given the period, phase shift, and vertical shift.
cotangent function, period = π , phase shift = -1/3 π , vertical shift = 2

The accompanying normal probability plot was constructed from a sample of 30 readings on tension for mesh screens behind the surface of video display tubes used in computer monitors. does it appear plausible that the tension distribution is normal? the given probability is has a significant downward curve, so it is plausible that the tension distribution is normal. the given probability is has a significant downward curve, so it is not plausible that the tension distribution is normal. the given probability is quite linear, so it is plausible that the tension distribution is normal. the given probability is has a significant upward curve, so it is not plausible that the tension distribution is normal. the given probability is quite linear, so it is not plausible that the tension distribution is normal.