Chrissyboots707
Chrissyboots707 Chrissyboots707
  • 14-12-2018
  • Mathematics
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why does it make sense that the slipe of perpendicular lines have oppposite signs?

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jacobricherson7194 jacobricherson7194
  • 14-12-2018

These lines are perpendicular since their slopes are negative reciprocals. If you multiply a slope times its negative reciprocal, the result is always -1. ... Let's prove that perpendicular lines have negative reciprocal slopes, AND that negative reciprocal slopes imply perpendicular lines.



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