HI guys just wandering if anyone can me with this problem. this is my set of
data

x1 y2 x2 y2 x3 y3
2.7 9.4 30.7 100.1 1.275 9.4
5.6 25.5 33.6 90.7 1.325 25.5
8.0 39.4 39.3 74.6 1.375 39.4
10.1 51.1 45.5 60.7 1.425 51.1

Plotting.
Set data 1 ( x1,y1 ) = plot with reverse Y value
Set data 2 ( x2,y2 ) = plot with normal Y value
Set data 3 ( x3,y3) = plot with reverse Y value, need secondary axis

I have been succesfull to plot all the data, except when i have to use the
secondry X-axes ( set data 3 )
i know there has been suggestion about " go to chart option and change it to
secondary x-axis, but the problem is because i have revese the Y value, the X
- axis swap to the top make it unable to have secondary axis
what happen when i " tick" secondary axis, my primary X-axis will
dissapear........please help me excel expert..........