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Question #71e9b

1 Answer

Mar 23, 2017

Average rate of change = #(Deltaf(x))/(Deltax#

Explanation:

#=(f(8)-f(5))/(8-5)#

#=(-1-2)/3=(-3)/3=-1#

For the instantaneous change rate we need to differentiate and use the value #x=5#:

#f'(x)=-2x+12#

#f'(5)=-2*5+12=2#
graph{-x^2+12x-33 [-1.11, 14.69, -2.365, 5.535]}

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