I have two questions regarding the 'y' axis - in a normal line graph
Firstly, how do i get the 'y' axis to appear in the middle of the graph IE
to cross the 'x' axis at (0,0) instead of currently (in my graph) (-10,0)
Secondly how do i plot the line "X =2" which should just be a vertical line
on the graph?

I'm using Microsoft Excel 2007 any help would be appreciated. Thanks