d) Graph y=-3 cos(4x) + 1 What does the + 1 do? + + + +x + + + +x 4) Graph y=4 sin ( 3x). List out the four key points and use ALL of the graphs below to show the step-by-step progression of the graph. List out the four key points. + + + +x b) Graph 3 cox (4x). The four key points should be labeled. What is the amplitude? + + + +x c) Graph y=-3 cos (4x). The four key points should be labeled. What does the ( - ) do to the graph?

cos2x=-cosx

Find the equation of the graph given below. Notice that the cosine function is used in the answer template, representing a cosine function that is shifted and/ or reflected. Use the variable x in your equation, but be careful not use the multiplication x symbol y= _ cos (_ ) + (_)

Multiply (1-cos)^2