I would like to have an adaptable logarithmic curve equation that I can then find y for any value of x.
I have two points (x1,y1) and (x2,y2).
My data requires constant decay (financial discounting of cash flows) and crosses the y axis. So with the two anchor points, what would be the generalised line equation (like slope intercept) for logarithmic decay that crosses the y axis?
For arguments sake, it might help to have x=0 as an asymptote, though this is not the reality of my data. It would be ideal to be able to adjust a constant to change the slope of the logarithmic decay curve. I dont know if this is possible.
Thank you!
Some sample data: Example 1: (8,2609) (39.14,0) Example 2: (8,972) (13,0) Example 3: (5,1000) (7.9,0)