Question 782118
2      	x	+	-5	y  	=	3				
Find the slope of this line										                                                                                                            
										
-5	y  	=	-2      	x	+	3    				
Divide by	-5									
	y  	=	  2/ 5	x	+	- 3/5				
Compare this equation with y=mx+b,					m= slope & b= y intercept					
slope m =	 2/5									
										
The slope of a line perpendicular to the above line will be the negative reciprocal										-5/2
Because m1*m2 =-1										
The slope of the required line will be			-5/2							
										
m=	-2 1/2	,point	(	4	,	-7	)			
Find b by plugging the values of m & the point in										
y=mx+b										
-7	=	-10      	+	b						
b=	3    									
m=	-5/2									
The required equation is		y  	=	-5/ 2	x	+	3      			
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