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Friday, October 07, 2005

Scribe for Tuesday is: "lan"

Horizontal and Vertical Lines!
Hello everyone! I hope you're having a good weekend!
The first thing we did today was writing our Muddiest Point in one minute! Well, that was quick!
After that Mr. K tried to explain to us the question that he gave us a day before which was: 2 perpendicular lines that have intercepts at point (9, 2) and the x-intercept of line 2 is twice the x-intercept of line 1.
He start it like this:
M -1/m
y-y1=m(x-x1) y-y1=m(x-x1)
y-2=m(x-9m) y-2=-1/m(x-9)
y-2=mx-9m y-2=-1/mx+9/m
y=mx-9m+2 y=-1/mx+9/m+2
0=mx-9m+2 0=-2x/m+9/m+2
0=m(x-9)+2 0=1/m(-2x+9)+2
-2=m(x-9)
......And he went on and on and when he stopped he said that he couldn't do it with us looking at him<>
Ok, back to out subject;
we put some info. about the Horizontal and Vertical lines in our dictionaries.
Note that the Horizontal lines have a slope equal to zero (0), and the equation is written as: Y=B and B is the y-intercept.
Example: a horizontal line with y-intercept of -2 has an equation of: y=-2
And also, all vertical lines DO NOT have there slope defined, so we say:"The slope is undefined." The equation is written as: X=K ( K is the x-intercept.)
Example: a vertical line with x-intercept of 7 has equation: x=7
As you can see i just copy down what we wrote [-( .
well, i can't explain so good and i might've missed some important points so i just copy down the stuff.
you know who the scribe is.... "lan"
See you Tuesday!

3 Comments:

At 10/07/2005 5:53 PM, Blogger parvin said...

there is space between the Red and Blue writing but it didn't came out.

 
At 10/07/2005 5:56 PM, Anonymous Anonymous said...

marlo_ has already been scribe he was the first scribe.

 
At 10/07/2005 6:06 PM, Blogger parvin said...

i changed it. :D

 

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