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Friday, October 07, 2005

scribe

I'am the oct.6 bogger scribe, iam sorry for being soo late.



During oct.6 we are talking about Formulas for lines:

here is the y=mx=b slope-int. formula which is use when we know the slope and the y-int.

note that m=slope b=y-int

we use y-y1=m(x-x1) is called the point-slope form, we use this when we know the slope and a point

Note that the one beside the y and x mean that the first y-int point and first x-int point

Here is the general form ax=by=c=0 "write this down in your dictionary"

The general (standderd) form

sometimes written as ax=by-c=0

useful for graphing lines when a and b are factors of c. we can easily find the int.

EX: 2x-3y=6 Ex: x-int., let y=0

find y-int. let x=0 2x-3(0)=6

2(0)-3y=6 x=3

y=-2

and anow we know the points for both int. so we point them
and Oct.7th scribe is Parvin Sia. sorry for telling you soo late

1 Comments:

At 10/07/2005 5:46 PM, Blogger parvin said...

It's ok! :)

 

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