The x-axis represents the number of hours after administration. The y-axis represents the concentration of a medication in milligrams per liter (mg/L).
The graph shown gives the estimated concentration of a medication in a patient's bloodstream as a function of the number of hours after it was administered. What is the best interpretation of the -intercept of the graph in this context?
The medication concentration was 225 mg/L when it was administered.
The medication concentration decreased to 225 mg/L after 24 hours.
The medication concentration was 225 mg/L after 12 hours.
The medication concentration decreased by 225 mg/L per hour.
