Final Cover - For Printing

A B

P

Mm:n

Eg. : Graph of 2x + 3y = 7

6. Distance formula
   In the rectangular coordinate system, the distance between any two points A(x 1 ,y 1 )
   and B(x 2 ,y 2 ) is given by,

AB = ()( )x 1 - x 22 + y 1 −y 2 2

The idea can be taught with linear presentation of the equation alongwith the embossed

rectangular coordinate system for additional input.

7. Section formula
   Consider the line AB whose coordinates are A(x 1 ,y 1 ) and B(x 1 ,y 1 ). Let “P” be a point
   which divides the given line in the ratio m:n. Then the coordinates of the point which
   divides the line segment AB can be found.

Y

X

Y|

O

A (x, 11 y)

B (x, 22 y)

• 
  

  3 - 2 - (^1) - 11
  1
  2
  2
  3
  3

  
  


• 
  

  2

  
  


• 
  

  3

  
  

(^2) x (^) +
(^3) y (^) =
7