Find f(a), f(a + h), and the difference quotient f(a + h) − f(a) h , where

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Find 
f(a), f(a + h),
 and the difference quotient 
f(a + h) − f(a)
h
,
 where 
h ≠ 0.
f(x) = 2x + 8
f(a) = 
 
f(a + h) = 
 
f(a + h) − f(a)
h
 = 
 
Jun 28th, 2015

Thank you for the opportunity to help you with your question!

f(x)=2x+8

f(a)=2a+8


f(a+h)=2(a+h)+8

          =2a+2h+8

f(a+h)-f(a)/h=2a+2h+8-2a-8/h

                    =2h/h

                    =2.

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 28th, 2015

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