y=x+1
or,0=x-y+1 ........... {1}
now...
slope of line..(m1)
= -(coe of x/Coe of y)
=-(1/-1)
=1
hence the slope of line , perpendicular to line y=x+1...
is m1*m2=-1
1*m2=-1
m2 =-1
hence the slope of line perpendicular to liney=x+1... is .. -1
