Friggin’ functions, right? Do they got you down? Don’t despair because I’ve created a fantastic playlist explaining them. This is a BIG concept on the SAT that makes up anywhere from 4-6 questions per test (out of 54 math questions, so that’s a lot. 7.4% to 11.1% of the math section!).
It also tends to be ripe with traps because it’s a concept that very few people truly grasp. I implore you to watch these in order (it’ll take a few hours), even if you feel like you know the basics. There are just too many traps for this concept, which I’ve pointed out all throughout this playlist.