Just a shot in the dark: 9*30 and 9*8?
This is a nonlinear equation because there is no common difference between the f(x) values.
If 0.25 in on a drawing is 12 ft in real life, than 1 in on the drawing is 48 ft in real life.
Just divide 15 by 48
15/48=0.3125
So the length of 15 in real life to a drawing is 0.3125 inches.
