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4. Given The partial graph of the cosine function below has a minimum point at (g 2) and a maximum point at (71', 8) as shown below. The equation of the function can be expressed in the form y = acos(b(x c)) +d, a, b. c.d E W. y a) Draw the midline on the graph. b) What is the amplitude ofthe graph? c) What is the period ofthe graph? d) What is the value of b in the above equation? e) What is the phase shift in the above graph? 1') What is the vertical displacement? g) Write the equation for the above graph in the form y = acos(b(x 6)) + d