The first game was a linear experience, with players going from point A to point B during each chapter. (gamerassaultweekly.com)
If the increase in CO2 over the last century is exponential, the resulting forcing wouldn't be linear with time, due to the pre-existing CO2 concentration. (realclimate.org)
A correlation of 0 indicates that there is no linear relationship between the two variables. (educationnext.org)