Regula falsi - Wikipedia
https://en.wikipedia.org/wiki/Regula_falsiThe method of false position provides an exact solution for linear functions, but more direct algebraic techniques have supplanted its use for these functions. However, in numerical analysis, double false position became a root-finding algorithm used in iterative numerical approximation techniques. Many equations, including most of the more complicated ones, can be solved …
Online calculator: False position method
https://planetcalc.com/3712False position method or 'regula falsi' method is a root-finding algorithm that combines features from the bisection method and the Secant method. As in the secant method, we use the root of a secant line (the value of x such that y=0) to compute the next root approximation for function f.