Tuesday, August 13, 2013

Algebra and Geometry Regents Discussion, Anyone?

I'm not in school and didn't (won't) see the exams, but if anyone would like to discuss any questions, I'd be happy for the diversion.

I don't know when the exams will be posted online for all to see, so please describe any problem you have a question or complaint about.

Thanks.

UPDATE 8/14/13: I still haven't seen the test but they posted the Conversion Chart. As usual, a Raw Score of 30 out of 87 (just over one-third) curved to a passing grade of 65.

To those who made that, Congratulations, and please don't take this the wrong way when I put out that passing a test with only one-third of the answers correct is NUTS. But that's the system we have and it isn't going anywhere.

The Geometry Chart is out as well. A Raw Score of 41 out of 86 (not quite half) merited a final score of 65.

UPDATE 8/17/13:There are two new threads dealing with the Algebra Regents. The Geometry thread is coming soon.
Part 1, multiple choice, and Parts 2, 3 and 4, Open ended.

Alex384 said...

How did you find the side of c if it said that A was -15 less than B and C was 2 times the side of A and C is the sum of both sides? And how to prove the sideway triangle with the line going down the center? And the last question: where it asked to prove it is not a rhombus, prove its a parallelogram.

(x, why?) said...

I'm sorry, but I need more information about the first two questions. I haven't seen the test, so I'm not sure what you are asking.

"C is the sum of both sides" doesn't make sense in a triangle. One side can't be as long as two other sides.

As for the proof:
A rhombus has 4 congruent sides and two pairs of parallel sides. Distance formula will give you the length of each side. If the consecutive sides are not congruent than the figure cannot be a rhombus.

A parallelogram just needs to have to pairs of parallel sides. Parallel lines have the same slope. Find the four slopes. If the slopes of the opposite sides are the same, then the quadrilateral is a parallelogram.