Question 152930
Perpendicular slopes to given lines involve taking some m value in:
y=mx+b and taking its negative reciprocal.


So,
0=3+x  we have m=1. So -1 would be a perpendicular slope.


-3y=12x+9
y=-4x-3  we have m=-4. So 1/4 would be a perpendicular slope.