21.6 Piecewise Functions: A Different Rule for Each Stretch
Point 5 of 5
21.6.5 How Absolute Value Connects to Pieces
Core idea
|x| is really just "keep it as is when positive, flip it when negative" — at heart it's a two-piece function stitched together.
Module goal. Understand functions whose domain is split into blocks, with each block described by a different line, and learn to graph them and read values stretch by stretch.
eastmath.com · 21.6 Piecewise Functions: A Different Rule for Each Stretch · 21.6.5 How Absolute Value Connects to Pieces