# Susanne217

#### Statistics

Total Posts
Blog
General Information
• Last Activity: Jul13-11 06:55 AM
• Join Date: Sep6-09

#### Friends

Showing Friends 1 to 1 of 1
•  jrlaguna Registered User

#### Blog

Latest Blog Entry

Posted Jul4-11 at 07:05 AM by Susanne217 Comments 0
Posted in Uncategorized
Remember if we have two points in the xy-plane which fits on a straight line which has the formula $$y = ax+b$$ then the formula for finding the slope is

$$a = \frac{y_2 - y_1}{x_2 - x_1}$$

Proof

Let $$(x_1,y_1)$$ and $$(x_2,y_2)$$ be points in the plane which we believe to fit a straight line which has the formula
$$y=ax+b$$ then inserting these points respectively into the formula gives us.

...

Posted Jun3-10 at 07:39 AM by Susanne217 Comments 0
Posted in Uncategorized
Back in High School I learned the following

If you have to equations on the form

$y = a \cdot x + b$ then to show then they have a commen (x,y) or more generelly they intersect then one had to go through the process of making the two linear equation equation each other and isolate the commen x and y. This was in my opinion a very tidious procedure where some of my fellow classmates often made errors. Then I became an undergraduate student I learned about...