Range is all of your "y" coordinates, and Domain is all of your "x" coordinates.
So for example, if we were to use a linear equation:
y=2x+3
We can infer that 3, the y-intercept, 5, the next number after three, as it is increasing by two, hence the "2x", and 1, the number before x=0 are all range coordinates. So, all odd numbers!
Considering "2x" means "two y for every x", you can infer that range is every single number, as it rises/falls by one every time consistently.
Hope this helps!