Asked by Katie A

Are these lines parallel, or perpendicular

2x+4y=4
4x-2y=1

I think they are niether
Answered by Reiny
slope of first = -1/2
slope of second = 2

Do you want to re-evaluate your decision ?
Answered by Katie A
so are the perpendicular?
Answered by Reiny
yes, the slopes are negative reciprocals of each other
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