## Accuracy Question

I was first given the limit:
$\lim_{x to 2}{1/x+1}$

I was then asked to find delta x and delta y in terms of each other (delta x = x-2 and delta y = y-(1/3)), which I found to be:

$\Delta(y)=-\Delta(x)/(3(\Delta(x)+3))$

$
\Delta(x)=(-9\Delta(y)/(1-3\Delta(y))$

and was then asked how accurate y~L if x~2+/- 10^-3. How do I do this?
Sorry if my tags are messy, I'm not used to using them. Appreciate any help!