Wednesday, December 17, 2008

Scribe - Thuan's version

Today in Math class..

we started off by Mr K talking about interpolation and extrapolation.


a. the process of determining the value of a function between two points at which it has prescribed values.
b. a similar process using more than two points at which the function has prescribed values.
c. the process of approximating a given function by using its values at a discrete set of points.


to estimate (a function that is known over a range of values of its independent variable) to values outside the known range.

Then Mr K started putting us into 4 groups, then he gave us questions on the smartboard. After we were all done with the questions we discussed the questions and how to get the answeres and why they were answers for example the first question was to find the Equation which was Y=-469.30143x+7599.39712 I dont know how you guys got the answer because I use a different calculator so i cant really explain how i got the answer. Basically we got through all the questions but what I learned this time when I was working with my group I learned what slope and y-intercept really means and how to get it.If the equation is written as y= ax+b, the slope number is the number "a"that is multiplied on the "x", and "b" is the y-intercept. Yet again I dont know how to show you guys how to do it on the calculator because I have a different one. In our case the slope is -469.30 and our y-intercept is 7599.39. What does those numbers mean? the slope means the price of the cars decrease every year by $469.30 and the y-intercept means well.. i forgot what it means but atleast I know how to get the answer. =D... thats a smiley face

Next Scribe will be....Yet Decided

Just kidding its Sandra just to start things all over again


Lani said...

Hi Thuan,

Thanks for the clarity in your definitions of interpolation and extrapolation.

I understand the slope from your scribe; can someone help me (and you) with an explanation of the y intercept?