The slope of a line perpendicular to the above line will be the negative reciprocal - 1/3
Because m1*m2 =-1
The slope of the required line will be - 1/3
m= - 1/3 ,point ( 1 , 1 )
Find b by plugging the values of m & the point in
y=mx+b
1 = - 1/ 3 + b
b= 4/3
m= - 1/3
The required equation is y = - 1/ 3 x + 4/ 3
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