Question

domain and range of y=.5x-3?

Answer 1

Domain: possible x values
Range: possible y values

Answer 2

so the domain is all real numbers?

Answer 3

Yep! You set your answer up like this:
{xIx=R(the symbol for real numbers)}

Answer 4

wait what?

Answer 5

so like (∞,∞) or something?

Answer 6

My math teacher makes me do it like this. It's good practice if you aren't already doing it.


It stands for The set of all X such that X is equal to all real numbers
It's kind of connfusing. Basically all you're doing is putting brackets around your answer and an xI in front of it.