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Monday, November 07, 2005

ELIZABETH'S SCRIBE POST!

Liz's internet was freezing up on her so she asked me to put her post up, so here it is:
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First of all .. I'd like to give a big THANKS to Aichelle ! .. because I had forgot my binder at school due to rushing to get to my volleyball game, and Aichelle has given her notes .. so THANKS SOO MUCH AICHELLE .. you're a life saver !! =)

We started off with 2 reviewing questions on the board :



Pretty self explanatory I think .

The next thing we did was :
how many points of intersection can there possibly be if we draw each pair below :
a) line and parabola
b) line and circle
c) line and ellipse
d) parabola and circle
e) parabola and ellipse
f) circle and ellipse

This question lead to :

x + y = 3 (Equation of a line)
x^2 - 6x + 9 = y (Equation of a Parabola)


x^2 - 6x + 9 = -x + 3
x^2 - 7x - 6 = 0
(x-6) (x-1)
x=6 x=1

Then subsitute both x cordinates to find the y cordinates, and the ordered pairs are where the line and the parabola meet .

** If your answer is like 0 = 2, where it is "non-sense" this means that they don't intersect at all.
** If your answer is 0 = 0, this means that the equation is the same line, they overlap one another.

1 Comments:

At 11/07/2005 9:55 PM, Anonymous Anonymous said...

so who's the next scribe?

 

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