Homework Help: algebra

Posted by sara on Wednesday, March 26, 2008 at 9:12pm.

Can someone tell me if I did this the right way? It seemed easy but it makes me worried that I did it wrong.

h is not equal to 0
f(x)=7x-9
f(x+h)-f(x)/h=
7(x+h)-9-(7x-9)/h=
7x+7h-9-7x+9/h=
7h/h=
7

algebra - bobpursley, Wednesday, March 26, 2008 at 9:17pm
It is correct. I assume you are supposed to be doing limits, but in this case limitof h/h as h approaches zero is 1.
- algebra - Anonymous, Wednesday, March 26, 2008 at 9:41pm
  Thank-you.

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