Tuesday, October 10, 2006
posted by christine at 8:36 PM

Graphing Method # 2
Using the Intercept Form

There are two intercept for any linear equation.

x intercept => where the line crosses the x axis.

y intercept => where the line crosses the y axis.

eg. graph the equation

* substitute 0 for x and then substitute 0 for y.

Using the intercept method.

Method # 3

Slope- Intercept Form

Step :
1.) Equation must be put into y= mx + b form.
ex. graph x- 2y = 2 ( using the intercept form.)

m = 1/2 = slope
b = -1 y intercept

2.) Plot the y intercept.
3.) Use the slope rise/run to find the second point from "b".

- and when graphing it, from point "b" rise 1/2 then run 2 place.


  • Exercise # 11 and 12

And dont forget about the following dates:

  • October 13, 2006 - Quiz- 3 Graphing Methods.
  • October 17, 2006 - Slide project is due. (Ms. Armstrong changed it due to not having enough time because of the fire drill incident.)
  • October 19, 2006 - Analytic Geometry

And the next blogger is Emman.



At October 11, 2006 7:00 PM, Blogger christine

sorry, for keeping everyone waiting.


At October 12, 2006 10:59 AM, Blogger ĸee.ley-

This was an assignment from my S2 Pre-Calc teacher. By reading this post I learned how to calculate the x and y intercept points. But I am still not sure what m is and I dont really understand Method #3.


At October 23, 2006 6:41 PM, Blogger onetwothree;KAREN

This was also an assignment from our S2 Pre-Cal teacher, same one as [kee.ley] before me. I learned from the graphs how to calculate the intercepts for x an y. And Keeley, m is the answer for slope. We learnt slope in class today and you missed it. Slope is when you have two points on a cartesian plane and you find the difference between them by subtracting the 1st from the second. You would do this as y2-y1 OVER x2-x1. That would give you the answer for slope, which is what they mean by m. I`m not sure why they use 'b' to show the intercept for y though.