### Home > ACC6 > Chapter 3 Unit 3 > Lesson CC1: 3.2.4 > Problem 3-129

3-129.

The segment is horizontal with one endpoint 4 units to the left of the *y*-axis and one endpoint that is 4 units to the right of the *y*-axis. You can use the expression below to determine the length of this segment.

|−4| + |4|