Find intervals that a function is increasing and decreasing

The video tutorial explains how to determine if a graph is increasing or decreasing by analyzing the X and F of X values. It emphasizes reading graphs from left to right and using X values to write intervals of increase or decrease. The tutorial highlights common mistakes, such as confusing Y values with X values, and provides examples of how to correctly identify and write these intervals.

What is the primary factor to consider when determining if a graph is increasing or decreasing?

• The color of the graph

• The X values

• The slope of the graph

• The F of X values

When reading a graph from left to right, what should you observe to determine if the graph is increasing?

• The F of X values

• The X values

• The axis labels

• The title of the graph

How should intervals be written when describing the behavior of a graph?

• Using the graph's title

• Using X values

• Using F of X values

• Using Y values

What is the behavior of the graph from X value 3 to 6?

• Constant

• Increasing

• Decreasing

• Fluctuating

From X value 9 to infinity, what is the behavior of the graph?

• Increasing

• Constant

• Decreasing

• Fluctuating