Use the definition of the derivative to find the derivative of each function with respect to x. 10) f(x) = -4x +4 11) y = 3x2 + 5 12) f(x) =-x2 - 3x +4 -3- Differentiate each function with respect to x. Problems may contain constants a, b, and c. 13) y =-5ax -bx *- 2ax 14) y = -5cx