Nonlinear Relationships
(A) Study time There is a positive and
nonlinear relationship between study
time and the grade on an exam. As
study time increases, the exam grade
increases at a decreasing rate.
For example, the second hour of study
increased the grade by 4 points (from 6
points to 10 points), but the ninth hour
of study increases the grade by only 1
point (from 24 points to 25 points).