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To: Eldon Tyrell

The test did not say it was the best method, just to show how it would be done if it was done this way. It’s a test of being able to add (or subtract) equations I guess.


5 posted on 06/10/2011 12:28:07 PM PDT by bkepley
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To: bkepley

My point is - whoever wrote it - does not have a conceptual feel for math.

It jumps off the page - the first thing they do is start blending info brtween the two equations.

This may work for this simple example - but add another few terms, maybe another variable - etc - and see where you end up -

Also - makes it very hard to check the work. if first equation is modified to Y = mx+b - you can easily check that the answer holds - rather than having to check large multiples etc.

The goal should be to simplify - the test method complicates.


11 posted on 06/10/2011 12:33:50 PM PDT by Eldon Tyrell
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To: bkepley
The test did not say it was the best method, just to show how it would be done if it was done this way. It’s a test of being able to add (or subtract) equations I guess.

From the question:

1. Select the best possible first step to solving the system by first eliminating the y variable.

22 posted on 06/10/2011 12:59:33 PM PDT by Bob
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