Please help

Let f ( x ) = Vx. a. Using the definition of the derivative, compute the derivative at x = 4 and x = 9. b. Let a be a real number. Compute the derivative at x = a. c. This gives you a function of the input a we will call g(a). Evaluate this function at a = 4 and a = 9. d. Graph g and f on the same axes (you should attempt this by hand, but may use an online grapher like DESMOS to assist). . e. Examine the graph of f. Estimate what happens to the slope of the tangent line to this graph as x gets larger and larger? What happens to the values of g as the x gets larger and larger