Question 174054
Basic equation of the line : y=mx+b, where  m is a slope
If two lines are perpendicular it means that if one has slope m1 then the other one has m2=-1/m1 (negative reciprocal) 
Equation of the line passing through point (x1,y1):  
y – y1 = m(x – x1)
  
1. find the slope of line 2 
if line1 y=3x+2 has slope m1=3, then slope of line2  
m2=-1/m1=-1/3
2.substitute m2,(x1, y1)=(1,-1) 
y-y1=m(x-x1)
y-(-1)=-1/3(x-1)
y+1=-1/3x+1/3
3.write equation in basic form
y=-1/3x-2/3---answer