Question 492637
5	x		-4	y  	=	10				
Find the slope of this line 										
										
-4	y  	=	-5	x	+	10				
Divide by 	-4									
	y  	=	1.250	x	+	-2.5				
Compare this equation with y=mx+b										
slope m =5/4									
										
The slope of a line perpendicular to the above line will be the negative reciprocal										-4/5
m1*m2=-1										
m=	- 4/5	,point	(	-5	,	7	)			
Find b by plugging the values of m & the point in										
y=mx+b										
7	=	4.00	+	b						
b=	3									
m=	- 4/5									
The required equation is y =-  4/ 5	x	+	3