If a graph is a straight line with a positive slope AND goes through the point (0, 0), then the relationship is direct. Definition: A quantity y is directly proportional to a quantity x if y = kx for some k > 0. Often just the term proportional is used to mean directly proportional.
In January 2011, the NYS Board of Regents adopted the NYS P-12 CCLS, which include the Common Core State Standards and a small amount of additional standards uniquely added by New YorkState. The New York State P-12 CCLS were implemented in New York State schools at the beginning of the 2012-2013 school year.
Then there's Oklahoma, which dumped the common core overboard and reverted to its prior standards, although it's still working on creating a new set of standards for the 2016-17 academic year. Then there are the states that are reviewing the common core in some capacity, like Missouri, North Carolina, and Tennessee.