With the graph of the function $f$ as an aid, **evaluate the following limits.**  $\displaystyle \lim_{x\,\to\, 3}\dfrac{f(x)-f(3)}{x-3}=\,$[[☃ math-keypad 1]] $\displaystyle \lim_{h\,\to 0^-}\dfrac{f(8+h)-f(8)}{h}=\,$[[☃ math-keypad 2]]