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OpenStudy (anonymous):
if f(x) = 20x+15 find the instantaneous rate of change of f(x) at x=-9
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OpenStudy (anonymous):
it is 20. instantaneous rate of change is the derivative of f at x. and f'(x)=20 for all x...
Parth (parthkohli):
Yes.
Parth (parthkohli):
You could say that the instantaneous rate of change is just the slope because what you gave is a linear equation.
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