Question 490050
x1		y1	x2	y2				
9		10	3	-2				
								
slope m =		(y2-y1)/(x2-x1)						
(	-2	-	10	)/(	3	-	9	) 
(	-12	/	-6	)  				
m=		2      						 
								
Plug value of  the slope  and point 			(	9	,	10	) in	
Y 	=	m	x 	+	b			
10.00	=	18    	+	b				
b=	10	-	18    					
b=	-8      							
So the equation  will be								
Y 	=	2    	x 		-8 

slope = 2 

slope of perpendicular line = -1/2
x intercept 
y=0
2x-8=0
2x=8
x=4
(4,0) and slope -1/2

Plug value of  the slope  and point (	4	,	0	) in
Y 	=	m	x 	+	b		
0	=	-2    	+	b			
b=	0	-	-2    				
b=	2      						
So the equation  will be							
Y 	=	- 1/2	x 	+	2    		

   			
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