This is a full lesson on adding and subtraction rational expressions, with explanations recorded on-screen, on every slide. I created it for anyone to use independently, at your own pace. It is perfect for homeschool learners, flipped classrooms, and sub-plans.I introduce inverse functions as solving for the other variable, expand to a more algebraic interpretation, and go over various techniques for graphing. I conclude with using composition to verify that two functions are inverses.This is a