SOLUTION: For each pair of lines, determine if they are parallel, perpendicular or neither. A. l1 : x-2y=6 l2 : 2x+y=3 AND B. l1 : 3x-y=1 l2 :

Algebra ->  Test  -> Lessons -> SOLUTION: For each pair of lines, determine if they are parallel, perpendicular or neither. A. l1 : x-2y=6 l2 : 2x+y=3 AND B. l1 : 3x-y=1 l2 :       Log On


   

Question 998742: For each pair of lines, determine if they are parallel, perpendicular or neither.
A.
l1 : x-2y=6
l2 : 2x+y=3
AND

B.
l1 : 3x-y=1
l2 : -x+3y=3
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
Put these in slope intercept form and if the slopes are equal, they are parallel, and if they are negative reciprocals, they are perpendicular.
-2y=-x+6
y=(1/2)x-6
y=-2x-3. These are perpendicular.
graph%28300%2C200%2C-10%2C10%2C-7%2C7%2C%28x%2F2%29-6%2C-2x-3%29
-y=-3x+1
y=3x-1
3y-x=3
y=(x/3)+3
Neither.
graph%28300%2C200%2C-10%2C10%2C-7%2C7%2C3x-1%2C%28x%2F3%29%2B3%29