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Re: IA #36
Posted:
Jun 18, 2008 9:36 AM



Regardless of what a text says, we should be following the NYS glossary. Here is how the state wants us to define a root, as copied from the HS glossary:
root of an equation (A) (A2T) A solution to an equation of the form f(x) = 0.
Example: A root of the equation y = 6x ? 18 is 3 because when 3 is substituted in for x, the value of y = 0. Example: The roots of are and. The equation is true if we substitute either or into the equation
Joe Mahoney Teacher of Mathematics Putnam Valley HS Putnam Valley, NY 10579 845.526.7847 http://www.os4e.com/pvcsd/pvhs/jmahoney
On Jun 18, 2008, at 8:04 AM, DJV wrote:
> Using various sources, the definition of root includes "the POINTS > where the graph of the equation crosses the xaxis" and "the roots > are the the xintercepts." Considering the fact that the students > were using a graph (not solving algebraically) they should be > receiving credit for listing the roots as points per the definition! > ******************************************************************* > * To unsubscribe from this mailing list, email the message > * "unsubscribe nysmathab" to majordomo@mathforum.org > * > * Read prior posts and download attachments from the web archives at > * http://mathforum.org/kb/forum.jspa?forumID=338 > *******************************************************************



