By default, HomotopyContinuation.jl tracks paths in projective space.
One can tell HomotopyContinuation.jl to track over affine space by using the flag `affine_tracking = true`

:

```
using HomotopyContinuation
@polyvar x y
f = [x^2 + y - 1, y - 4]
solve(f, affine_tracking = true)
```