Question

Javier found the following data collected about sugarcane yields during August 2008. What is the minimum value of the domain of this relation?

{(46.81,39.40),(55.64,32.61),(46.49,34.07),
(45.06,41.02),(44.03,42.03),(40.32,50.23),
(52.24,36.19),(47.03,34.56),(38.07,43.17)}