Posted by Brad Paul on October 14, 2002 at 17:03:17:
In Reply to: Re: graphs posted by elu on October 14, 2002 at 14:51:59:
: sorry - thats wrong of course. it should be like:
: y=100 if x=0
: and y=0 if x=280
: no straight line but a curve like the one i draw (see www.labor1.de/ma/graph.jpg).
That curve looks like a:
y=a e-b x
If your two points are (x1,y1) and (x2,y2) solve the folloing equations for a and b:
y1=a e-b x1
y2=a e-b x2