Question 501724
x1		y1	x2	y2				
1		1	3	7				
								
slope m =		(y2-y1)/(x2-x1)						
(	7	-	1	)/(	3	-	1	) 
(	6	/	2	)  				
m=		3      						 
								
Plug value of  the slope  and point 			(	1	,	1	) in	
Y 	=	m	x 	+	b			
1.00	=	3    	+	b				
b=	1	-	3    					
b=	-2      							
So the equation  will be								
Y 	=	3    	x 		-2    			
m.ananth@hotmail.ca