 Piecewise linear function

A piecewise-linear function is linear on each member of a finite or locally finite partition of its domain into intervals or polyhedral pieces.

A piecewise linear function is a function composed of multiple linear segments. Each segment is defined by a linear equation over a specific interval in its domain. Essentially, the function "pieces together" several lines to create a graph that can take various forms depending on the specified intervals and the slopes of the lines.