if anyone figures out this riddle i will give you 10 bucks (ik its not a lot of money but its an easy riddle) What has ring but no finger?

Mr. jones determined that the equation y = 98 - 16/5 x could be used to predict his students' unit test scores, based on the number of days, x, a student was absent during the unit. what was the meaning of the y-intercept of the function? (by the way the 16/5 is a )