Aclassroom study was done to investigate the relationship between time and answering test questions. the correlating linear model is shown below, where x represents the number of questions answered, and y represents the number of minutes of test taking. interpret the slope.
y = 0.87x
a. an additional 0.87 test questions answered is associated with an additional minute of test taking.
b. an additional 0.87 minutes of test taking is associated with an additional test question answered.
c. zero minutes of test taking is associated with 0.87 test questions answered.
d. not enough information is provided to interpret the slope.