Question

how do you know if the domain is all real numbers?

Answer 1

the x-coordinates are the domain..

Answer 2

Thank you! Also how do you know if the domain is all real numbers?

Answer 3

it is not always that Domains are always real number.

Answer 4

I understand that, but how do you know if the domain is real numbers? For example is the domain of (-4,4) real numbers? I am thinking yes, I am just not positive.

Answer 5

yes you are right, non-real numbers are like imaginary numbers....

Answer 6

Thank you.