Posted by Blue13 on .
Determine which of the following lines, if any, are parallel or perpendicular:
line a: 3y+x=6 line b: y=3x+2
line c: 3x+y=0

algebra 
Reiny,
parallel lines have the same slope
perpendicular have slopes that are opposite reciprocals
change each line equation to the form y = mx + b and you will be able to tell.