Correct. It forms every complex no. (& thus every real no.).
A more general way to look at this is you have some number
![](https://latex.codecogs.com/png.latex?\bg_white z)
which is within the complex field, and you have some factor
![](https://latex.codecogs.com/png.latex?\bg_white k)
that can be any number within the complex field. Obviously the set of
![](https://latex.codecogs.com/png.latex?\bg_white kz)
would be any number you want within the complex field as we can just let
![](https://latex.codecogs.com/png.latex?\bg_white kz = p)
, choose the value of
![](https://latex.codecogs.com/png.latex?\bg_white p)
we want, and reverse the process to find a suitable
![](https://latex.codecogs.com/png.latex?\bg_white k)
value.