Question 437276
x1		y1	x2	y2				
-3		0.5	-7	2.5				
								
slope m =		(y2-y1)/(x2-x1)				-0.5		
m=		-0.5						
								
Plug value of  the slope  and point 			(	-3	,	0.5	) in	
Y 	=	m	x 	+	b			
0.50	=	1.5	+	b				
b=	0.5		1.5					
b=	-1							
So the equation  will be								
Y 	=	-0.5	x 	+	-1