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Thursday, September 15, 2005

SCRIBE TIME!!!!

Okay here I go I just want to warn everyone right now I’m not much of a writer so I hope you can all bare with me, and Abriel why did you have to raise the bar up soooo high haha well anyways today Mr. K started the class off by reviewing myself and fellow classmates with the previous topic we learned yesterday which was to find the vertex, axis of symmetry, domain, range, and so forth of a quadratic function. When you look at how an equation is written, REMEMBER that it can be written in many ways such as:

y=(x-3)²-4 is the same as y=x²-6x+5

While doing a chart, or any sort of equation and looking for the domain, range, etc DON’T FORGET that the domain is always (-∞,∞). Also when looking for the vertex and axis of symmetry WATCH OUT FOR THE SIGN OF H, and when your being asked WHAT a value is or point that means you’re to give the y-coordinate. Same goes if your being asked WHERE a certain point or value is, but instead you give the x-coordinate.

Afterwards Mr. K gave us an equation to factor which confused most of us…okay well sort of, that is I think…I guess we just couldn’t understand how we were to find the roots of this equation if you can’t factor it out because it looked prime, but to our surprise it wasn’t because it was in the fourth quadrant and opened up which shows and proves that there are roots. Here’s an example of an equation that is prime and that isn’t;

y=x²-6x+11 PRIME!!

y=x²-6x+4 NOT PRIME!!

Once we finished discussing about prime numbers we went on to our dictionary and took some notes down about the factored form of a parabola, basically if a quadratic is factorable (ie. not prime, it has zeros) then it can be factored as a product of 2 binomials.

Y=x²+5x+6
Y=(x+3)(x+2)

We wrote some more notes on using the factored form of a parabola. Took our calculators out for a bit, but didn’t do much with it today…not sure though :) but yeah before I forget Mr. K wanted the scribe…which is me to remind all you guys that when factoring out a quadratic DON’T AND I REPEAT DON’T FORGET TO ALSO WRITE DOWN THE ZERO OR Y!!!! because if you do your going to end up losing half a mark which I know right now doesn’t sound like much but on quizzes, test and maybe even on the exam once you count all those half marks you lost TRUST ME it’s going to end up being a ton of marks…well I hope I didn’t bore anyone to death since I kind of wrote a little too much….RRRRIIIINNNGGG well I guess that’s it, times up!!!!

Tomorrow’s scribe is….JonathonJ.

3 Comments:

At 9/15/2005 9:45 PM, Blogger Mr. Kuropatwa said...

Pam, that was outstanding!

I have the BEST students!

 
At 9/15/2005 10:03 PM, Blogger Richy said...

Of course you do. Haha

Exclent Scribe post though.

 
At 9/15/2005 11:45 PM, Blogger abr13l said...

and you were saying you didn't know how to scribe? haha. BTW i didn't raise the bar THAT high you just took the bar and raised it again

good job

 

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