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Topic: increasing definition
Replies: 6   Last Post: May 27, 2014 8:46 PM

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Meg Clemens

Posts: 345
Registered: 12/3/04
increasing definition
Posted: May 23, 2014 12:06 PM
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In a sample problem for scoring the CC Alg 1 regents (#3 in the link below),
students are asked to graph y = abs(X + 1) and then asked the range of the
function and the domain on which the graph is increasing. The scoring
rubric gives x > -1 (open interval) as the correct increasing interval
instead of x>= -1 (closed interval). The definition of increasing and
decreasing and whether the intervals are open and closed are discussed every
year on the AP Calculus listserv. The correct interval should be closed not

For someone who attended this session at the May NTI, did anyone raise an
objection to the scoring rubric for this question? This type of question
could easily be on the June 3rd exam.

One more example of why we need a statewide glossary.


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