How do you find the slope of a line perpendicular to C(13, 2), D(15, -5)?
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Step-by-step explanation:
the slope of a line through (13 , 2) and (15 , - 5 ) is equal to
(2 + 5) / (13 - 15) = 7 / - 2 = - 7 / 2.
then the slope of the line perpendicular to the former line is
- 1 / (- 7 / 2) = 2 / 7.
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