Domain and Range of the Constant function f(x)=c

For the constant function f(x)=c, the domain consists of all real numbers.
There are no restrictions on the input.
The only output value is the constant c, so the range is the set {c} that contains this single element.
In interval notation, this is written as [c,c], the interval that both begins and ends with c.

[deiradeira]

haha using this to cram review for a quiz tomorrow, thanks! Really helpful

[eighty]

what app are u using to this vid, sir?