Guide | Tag


Sets a contextual environment regarding the kind of subject, category or similar taxonomies.

It shows as follows:


To use it in Moodle, click on the Components for Learning button In the Atto editor and select the item Tag:

Tag Atto button in Moodle

Use cases



For the following exercises, determine whether the relation is a function.

  1. {(π‘Ž,𝑏),(𝑐,𝑑),(𝑒,𝑑)}{ (a,b),(c,d),(e,d) }
  2. {(5,2),(6,1),(6,2),(4,8)}{ (5,2),(6,1),(6,2),(4,8) }
  3. 𝑦2+4=π‘₯,y2+4=x, for π‘₯x the independent variable and π‘¦y the dependent variable

Precalculus 2e by OpenStax – licensed under Creative Commons Attribution License v4.0