We went over chapters 5-9 in math, or at least attempted to. This class was good because I wasn't in the best mood and Jenna Rae totally cheered me up.
Anyway, I finally (kind of) learned how to determine what the domain and range of an equation is. It's actually not that hard. The domain is the input and the range is the output in an equation (I knew that part). For the domain, you basically have to make sure that denominators never equal zero when you substitute the x with "whatever". If you get a zero with that "whatever" then that number can't work..and you have to figure out which ones do. Then you have to figure out what y can be, and that'll be your answer. Answers are usually something like, "all real numbers except -3" or "all positive integers." I don't know if that makes any sense at all..oh, well.
math sucks
ReplyDeletei hate that i'm good at it