How to determine the intervals that a function is increasing decreasing or constant

The video tutorial explains how to identify increasing, decreasing, and constant behaviors in graphs. It emphasizes reading graphs from left to right and using X values to determine Y value behavior. The tutorial clarifies notation differences from domain and range and provides examples to illustrate graph behavior analysis.

What is the importance of X values in analyzing a graph?

Describe the process of identifying the intervals of increase and decrease in a graph.