Which equation is an identity?

5y + 5 = 5y – 6

8 – (6v + 7) = –6v – 1

3w + 8 – w = 4w – 2(w – 4)

6m – 6 = 7m + 9 – m

Draw a graph y=f(x) that matches the following characteristics. increasing on: -8< x< -4 and-1< x< 5. decreasing on : -4< x< -1. f(-8)=-5 and zeros at x=-6,-2,and 3. absolute maximum of 7 and absolute minimum of -5.