I need some help with this problem could you show me how to answer it and could you also graph it please.

determain weather the lines through each pair of points are parallel or perpendicular

2,6 and -2,8

0,3 and 1,5

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- Sep 26th 2006, 07:39 PM #1

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- Sep 26th 2006, 07:45 PM #2

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- Sep 27th 2006, 02:51 AM #3