SOLUTION: can two lines, both with positive slopes, be perpendicular? explain

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Question 30062: can two lines, both with positive slopes, be perpendicular? explain
Answer by Cintchr(481) About Me  (Show Source):
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No. Perpindicular lines have slopes that are opposite recipricals of one another
such as
+3%2F4+ and +-4%2F3+
+5%2F2+ and +-2%2F5+