SOLUTION: Are the following lines parallel, perpendicular, or neither? L1 with equation x-4y=12 L2with equation 4x+y=4 Check their slopes,m: y=mx+b If m1 and m2 are equal, then th

Question 117885: Are the following lines parallel, perpendicular, or neither?
L1 with equation x-4y=12
L2with equation 4x+y=4
Check their slopes,m:
y=mx+b
If m1 and m2 are equal, then the lines are parallel.
If m1 and m2 are negative reciprocals, then the lines are perpendicular
L1 = -4y=-x+12-->y=1/4x-3--->m1=(1/4)
L2 = y = -4x +4--->m2=(-4)
Since m1 and m2 are negative, reciprocals the lines are perpendicular.
Hope that helps.
misscrt

Answer by misscrt(37) (Show Source): You can put this solution on YOUR website!

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