Final answer:
To calculate your participation grade G based on the classes you miss M, a simple equation could be G = 100 - 5M, where 5% is subtracted from a perfect score of 100% for each class missed.
Step-by-step explanation:
To write an equation for computing your participation grade, G, as a function of the number of classes you miss, M, we will need a model. A simple linear equation could be used, where each missed class subtracts a certain amount from your total grade. Assuming full participation earns you a 100%, and each missed class reduces your grade by a set percentage, say 5%, the equation would look something like:
G = 100 - 5M
Remember that this is a very simplified model and real-world grading systems can be much more complex, potentially including factors like in-class participation, quality of participation, and more.