Question 785382
5      	x	+	-7	y  	=	-6				
Find the slope of this line										                                                                                                            
										
-7	y  	=	-5      	x		-6    				
Divide by	-7									
	y  	=	  5/ 7	x	+	 6/7				
Compare this equation with y=mx+b,					m= slope & b= y intercept					
slope m =	 5/7									
										
The slope of a line perpendicular to the above line will be the negative reciprocal										-1 2/5
Because m1*m2 =-1										
The slope of the required line will be			-1 2/5							
										
m=	-7/5	,point	(	8	,	-4	)			
Find b by plugging the values of m & the point in										
y=mx+b										
-4	=	-56/ 5	+	b						
b=	365									
m=	-7/5									
The required equation is		y  	=	-7/ 5	x	+	36/ 5			
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