I also have a question that is a bit more pragmatic. I’m in the middle of reviewing an 8th grade text for my state adoption. In the earlier part of the text they do an extensive section on proportional and nonproportional “relationships”, but never mention the concept of function. Later in the text, they delve deeply into “functions” with. Definitions and such. My dilemma is that they include the earlier lessons on relationships as primary citations matched to the function standards. What are your thoughts on that? Do those citations qualify even though there is no mention of a “function” or is this an insurmountable flaw in alignment?