I would like to find out if it is possible to "reverse" the y-axis,
where zero is at the top of the axis, and the highest positive number
is in the bottom left corner where the x-axis intersects. I have a
line graph showing rankings, where a lower number is considered
better. I would like the lines to rise as the rankings get lower. Is
there any simple setting to have this occur?

Thank you for any suggestions.