6. Use the graph of the function f below to answer the following y = S(x) (a) draw the tangent line to the graph of f at r 0 (b) use the graph to estimate the value of the derivative of f at r 0. (c)...

Use the graph of the function f below to answer the following.

Please solve part  a,b,f thanks

Extracted text: 6. Use the graph of the function f below to answer the following y = S(x) (a) draw the tangent line to the graph of f at r 0 (b) use the graph to estimate the value of the derivative of f at r 0. (c) at which values of r is f'(r) = 0? (d) at which values of z is the derivative of f undefined? (e) estimate the value of the derivative of f(f(x)) at r = -2.5, using the graph & derivative rules. (f) use the graph of f to sketch a graph of f'(z), the derivative of f.