can you verify this for me? Also im not sure how to get y

Enter the exact answers. Amplitude: A = l -2 ' Midline: y = l -6 ' Period: P 2 l5 E E- Enclose arguments of functions in parentheses. For example, sin (2 * 3:). Include a multiplication sign between symbols. For example, for 2 71' type in 2 * 71'. For the number 7r, either choose 7r from the drop-down menu (under a) or type in Pi (with a capital P). IED