How to define basis offsets/coefficients

[styf3000]

Hi!
I am trying to adapt the example system to one of my own. I have read your paper, however, I haven't been able to understand
why basis_offset and basis_coeff are given those values:

quantum_poly_solver/poly_brute_force.py

Line 37 in 0867158

basis_offset = np.array([-0.5, 1])

Would you be kind enough to explain or point me to how they are defined?
Juat as a note, my system has more than two equations.
Thank you!