Question 521342
4	x	+	9	y  	=	7				
Find the slope of this line 										
										
9	y  	=	-4	x	+	7				
Divide by 	9									
	y  	=	0	x	+	0.78				
Compare this equation with y=mx+b										
slope m =	-0.44									
										
The slope of a line perpendicular to the above line will be the negative reciprocal										2.25
m1*m2=-1										
The slope of the required line will be 			2.25							
										
m=	2 1/4	,point	(	3	,	-6	)			
Find b by plugging the values of m & the point in										
y=mx+b										
-6	=	6.75	+	b						
b=	-12.75									
m=	9/4									
The required equation isy	=	9/ 4	x-51/ 4			
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