Properties and Graphs of Trigonometric Functions

Graph Sinusoidal Functions using Key Points

1. (a) Find the amplitude and period of \( y=-4 \cos\left( \frac{3\pi}{2}x\right)\).    (b) Write the equation of a sine function that has the given characteristics:  Amplitude= 3, Period = 2     SOLUTION

2. Graph the function \(y=3\sin(4x) \) using key points.  SOLUTION

3. Find an equation for the graph.  SOLUTION