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Posted by on Thursday, September 29, 2011 at 9:51pm.

Are these lines parallel, or perpendicular

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

I think they are niether

  • algebra - , Thursday, September 29, 2011 at 10:16pm

    slope of first = -1/2
    slope of second = 2

    Do you want to re-evaluate your decision ?

  • algebra - , Thursday, September 29, 2011 at 10:28pm

    so are the perpendicular?

  • algebra - , Thursday, September 29, 2011 at 11:19pm

    yes, the slopes are negative reciprocals of each other

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