So Both DV and a proportion can be represented as
$y = kx$
So I was wondering- is there a difference?
2026-03-25 18:45:17.1774464317
What is the difference between Direct Variation and a proportion?
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I believe that "x varies directly with y" means exactly the same as "x is directly proportional to y".
This is anecdotal, but it seems to be trendy in secondary math education these days to use the former terminology, although (as evidenced by the references on the wiki page for Proportionality), the latter was used more 10 years ago. I don't know the reason for the change.