Skip to main content
2 events
when toggle format what by license comment
May 27, 2010 at 20:57 comment added Michael Hardy The "perpendicular" idea is seen to make no sense if you consider a case where they x-values are in inches and the y-values is dollars, and you suddenly change from inches to feet. Which direction is considered "perpendicular" shouldn't depend on which units of measurement are used.
May 27, 2010 at 20:55 history answered Michael Hardy CC BY-SA 2.5