Changing Behavior of Open Graphs

Discover what it means for intervals of a graph to be increasing, decreasing or constant.
On the handout, record your responses to the the questions below.
1) What does it mean for a graph to be increasing over an interval? Decreasing? Constant?[br]2) Is it possible for a graph to be neither increasing nor decreasing? What does that look like on a graph?[br]3) Where do the values for the interval notation come from? What do the numbers represent?
– Patti Mosko, GeoGebra Content Team

Information: Changing Behavior of Open Graphs