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.
Even though this definition is pretty clear as to the need for the roots to be stated as a solution, the wording of the question is very misleading after referring to the graph for providing the answer.
Also, while we were chatting, she also stated that any intercept is the value as well, and not the coordinate. For example, the y-intercept of y=3x+5 is 5, and not (0,5). Who knows, maybe something like this might appear in the future, where semantics between definitions are used to catch students!
Have a great weekend everyone!
Director of Mathematics
Half Hollow Hills CSD
-----Original Message----- From: firstname.lastname@example.org [mailto:email@example.com] On Behalf Of Catherine Weaver Sent: Friday, June 15, 2012 2:57 PM To: firstname.lastname@example.org Subject: Re: Algebra Regents
We strongly disagree, but were told by the state that it had to be x =-4 and x =2. ii argued that students displayed understanding by locating the points on the graph.