I need help solving these problems to help study for midterms, if possible explanations would help as well. Thank you so much!

60. Use the definition of a derivative to find f'(x) for f (x) = Vx - 6. I= 66. Use the graph of y = f (x) to sketch the graph of its derivative f'(x). 20 16 12 + 8 . 4 - -5 - 4 -3 - 2 -1 0 1 3 4 X -4- - 8- -12 -16- -20