Click on the link below to access eTool.
4-22 Answer:

1. Click arrow icon to view/hide the rule and table for each Tile pattern.
NOTE: The color of the function is the color of the graph.
PURPLE - Tile Pattern #1
ORANGE - Tile Pattern #2
RED - Tile Pattern #3
GREEN - Tile Pattern #4

2. Click the folder icon to view the/hide the graphs.
