Term 4 Week 3

Coordinate Geometry continued...

We have hopefully reached an understanding that any line can be defined by an equation of this form:

y = mx + b

where 'm' is the gradient of the line, and 'b' is the place the line crosses the y axis - ie the y intercept.

By understanding 'm' we can compare lines with each other. We can say that if two lines have the same 'm' value that they must be parallel. Furthermore we find that if we want to check if two lines are perpendicular we can multiply their 'm' values and if the result is -1 then we can conclude that they are.


Coordinate Geometry Assignment 2 is here

Coordinate Geometry Assignment 3 is here