SOLUTION: Are these sets of lines parallel, perpendicular, or neither. 3x+y=5 -x+3y=6

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Question 175067: Are these sets of lines parallel, perpendicular, or neither.
3x+y=5
-x+3y=6
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
write equation in slope intercept form...y=mx+b
:
y=-3x+5
:
3y=x+6--->y=(1/3)x+2
:
now compare the slopes one is -3 and one is 1/3.....those are negative recipricals of each other therefore these lines are perpendicular to one another