The given equation is

This given equation is represented graphically by a vertical line at x = 8
Let us draw it
1) Its domain is

2) Its range is

3) Its zero is

4) No y-intercept
5) Slope is undefined
6) Type of the slope: None
7) x = 8 can not be a function, then f(8) does not exist
8) f(x) = 0 does not exist