Alright, we've avoided this long enough! To do algebra, we can't just be all about solving equations, we eventually have to graph some stuff as well. Let's start with the easiest things to graph, lines. Here is a little introduction to the coordinate plane and how to graph lines. Watch the whole Mathematics playlist: Classical Physics Tutorials: Modern Physics Tutorials: General Chemistry Tutorials: Organic Chemistry Tutorials: Biochemistry Tutorials: Biology Tutorials: EMAIL► ProfessorDaveExplains@ PATREON► Check out "Is This Wi-Fi Organic?", my book on disarming pseudoscience! Amazon: Bookshop: Barnes and Noble: Book Depository: