Question

whats domain and range

Answer 1

domain is what you can use; range is what you can get

Answer 2

THE DOMAIN IS X AND THE RANGE IS Y

Answer 3

to expand on what amistre said - if you have an equation of the form:\[y=f(x)\]
the domain is what values of x can be used in f(x).
the range if the range of values that this generates for y - i.e. minimum y to maximum y.

as an example, for this function:\[y=\frac{x}{x−1}\]the domain cannot include the value x=1 as that would not give you a value value for y.
so the domain here is \(x\ne1\).

Answer 4

the range in the above example would be \((-\infty, +\infty)\)

Answer 5

it is making any sense to you?