It says on the moodleformulas site that we can add pictures/graphs to formulas questions, such as GeoGebra pictures. It says to use the iframe tag. It claims that you can import to the picture the variables you assigned in formulas. That all sounds fabulous ... except there is no hint as to how to actually do it. No examples. When I search the forums with iframe it drops me into developers discussions. Searching "iframe and GeoGebra" gets me closer, but also raises more questions.
Suppose I want to add to the following question
a simple Geogebra picture like
where moodleformulas passes on the variables to the GeoGebra picture. How can this be done?
I know how to do this using the GeoGebra plugin. But I would like to learn how it can be done in Formulas.
Can someone direct me to an example ... or a forum answer ... or a place where I can learn how to do this?