The video tutorial explains how to determine the intervals where a graph is increasing, decreasing, or constant. It emphasizes reading graphs from left to right and using X values to define intervals. The tutorial provides examples of different graph behaviors, including exponential and decay functions, and highlights the importance of understanding graph behavior for accurate interval identification.

What is the primary axis used to determine if a graph is increasing or decreasing?

• W-axis

• Z-axis

• Y-axis

• X-axis

When writing intervals for a graph, which direction should you read the graph?

• Bottom to top

• Left to right

• Top to bottom

• Right to left

In the example provided, what is the interval where the graph is decreasing?

• From -5 to -2

• From -2 to 3

• From -Infinity to 5

• From 3 to Infinity

What type of function is described as having a very slow decrease?

• Logarithmic function

• Quadratic function

• Linear function

• Exponential decay function

How is a constant interval represented on a graph?

• With a dotted line

• With a zigzag line

• With a straight line

• With a curved line

What does an open circle on a graph indicate about an endpoint?

• The endpoint is a minimum

• The endpoint is a maximum

• The endpoint is not included

• The endpoint is included

Which of the following intervals is considered constant in the example?

• From -Infinity to -3

• From 2 to Infinity

• From 1 to 3

• From -3 to 2