The slope of a line perpendicular to the above line will be the negative reciprocal -3
m1*m2=-1
m= -3 ,point ( 3 , 3 )
Find b by plugging the values of m & the point in
y=mx+b
3 = -9 + b
b= 12
m= -3
The required equation isy =-3x + 12
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