need help in completing a table

*ok i already tried this but i'm not really sure if i did it right at all so i'm looking for some help. heres the problem.(spaces didnt work, i had to use underscores)*

**Use the function f(x)=2/x for the following.**

a. Complete the table for x=2

h_|x+h| f(x+h) | f(x) | f(x+h)-f(x)/h

1_|___|_______|____|___________

.5_|___|______|____|___________

.1_|___|______|____|___________

.01|___|______|____|___________

*now i completed the table by just plugging in 2 for x on all of the rows, along with the corresponding h value. so mine looks like this.*

_h_|x+h|f(x+h)__|f(x)| f(x+h)-f(x)/h

_1_|_3_|__2/3__|_1_|-1/5

.5_|2.5_|__4/5__|_1_|-2/5

.1_|2.1_|20/21__|_1_|-1/2

.01|2.01|200/201|_1_|-1/2

*is that the correct way to do it or am i missing something?*

also there are a couple corresponding questions

**b. Find f'(2) by a rule or formula**

*i got ***-1/4** for this

**c. Is there a relationship between parts A and B? If so, what?**

*this is where i figured i did the table wrong, because i can't figure out what the relationship is. this is all for an important grade i could really use any help you can give me. thanks.*