Question 479498
x1		y1	x2	y2				
1		8	2	-4				
								
slope m =		(y2-y1)/(x2-x1)						
(	-4	-	8	)/(	2	-	1	) 
(	-12	/	1	)  				
m=		-12.00		-12      				 
								
Plug value of  the slope  and point 			(	1	,	8	) in	
Y 	=	m	x 	+	b			
8.00	=	-12	+	b				
b=	8		-12					
b=	20							
So the equation  will be								
Y 	=	-12	x 	+	20			
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