Find a possible formula for the trigonometric function graphed below. Use z as the independent variable in your formula. f(I) = help (formulas) 1. 2. Suppose y = -3 cos (8t + 17) - 6. In your answers, enter pi for (a) What is the phase shift? help (numbers) (b) What is the horizontal shift? help (numbers) 3. Below is the graph of the function f(z) = 10 sin (z) in blue. Decide whether the following graph appears to be a periodic and a second sinusoidal function y = 9(x) in red, which is a function. If so enter the value of its period in the blank. If the graph horizontal shift of y = f(x). Find a formula for the function g(I). does not appear to be periodic enter NONE. 9(z) = help (formulas) The period is (Enter NONE if not periodic.) help (numbers) e( x ) [(x) 2.5 5. The graph of y = tan(I) is vertically stretched by a factor of 3, shifted a distance of 3 units to the right, and then translated 9 units downward. Write the equation for the curve in its final position. f(z) =