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Find each function f, construct and simplify the difference quotient

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1 Answer

Theresa, did you mean:
 
f(x) = -1/2 x + 7
 
(f(x+h) – f(x))/h is the Difference Quotient
 
f(x+h) = -1/2 (x+h) + 7
 
f(x+h) = -1/2 x – 1/2 h + 7
–f(x) = 1/2 x – 7
––––––––––––––––––––––
f(x+h) – f(x) = – 1/2 h
 
(f(x+h) – f(x))/h = – 1/2
 
[This is used in Calculus to "find the derivative of f(x)"]

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