# COORDINATE GEOMETRY

[ (X1,Y1) and (X2,Y2) is [1/2(X1+X2),1/2(Y1+Y2) ]

Coordinate Geometry: An Introduction

## to learn more about coordinate geometry you can visit :

- WWW.onlinemathlearning.com
- WWW.mathwire.com
- WWW.venturaes.com
- WWW.mathopnref.com
- WWW.mathsrevison.net
- WWW.mathwarehouse.com

## M I D P O I N T

the midpoint formulas works excatly the same way if you need the point that is excatly

halfway between two given points , just average the X-values and the Y-values .

- its X values is halfway between the 2 X values
- its Y values is halfway between the 2 Y values -TO CALCULATE IT
- add both "X" coordinates , divide by 2

M= < Xa+Xb , Ya+Yb

## THE SLOPE FORMULA

the slope M of the line through the points ( X1,Y1) and ( X2,X2) is given by

M=Y2-Y1