Question 475340
x1		y1	x2	y2				
1		8	9	-6				
								
slope m =		(y2-y1)/(x2-x1)						
(	-6	-	8	)/(	9	-	1	) 
(	-14	/	8	)  				
m=		-1.75	or -7/4
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