9 Determine the amplitude and period of the function. Graph the function. y= - 3cos ,x The amplitude is (Simplify your answer.) The period is (Type an exact answer using it as needed. Use integers or fractions for any numbers in the expression.) Use the graphing tool to graph the function. - 2 (For any answer boxes shown with the grapher, type an exact answer. Type the word pi to insert the symbol x as needed.) aplitude : period: vertical shift : horizontal shift : E x- axis reflection y- axis reflection 10. Use a vertical shift to graph the following function. y = - 6 sin 2xX + 1 Use the graphing tool to graph the function. (For any answer boxes shown with the grapher, type an exact answer. Type the word pi to insert the symbol x as needed.) aplitude : period : X 0/6 vertical shift : horizontal shift : X- axis reflection y - axis reflection 42 88 F