Question 704683
slope m = (y2-y1)/(x2-x1)

P(4,-7)and Q(3,-4)


(	-4	-	-7	)/(	3	-	4	)
(	3	/	-1	)  				
m=		-3    						 




R(-5,3) And S(-2,2)

x1		y1	x2	y2							
-5		3	-2	2							
											
slope m =		(y2-y1)/(x2-x1)									
(	2	-	3	)/(	-2	-	-5	)			
(	-1	/	3	)  							
m=		- 1/3		

The slopes are not equal so they are not parallel