HELP! Geometry

Determine the slope of a line perpendicular to the line shown.
(3,5) and (7,-8)

A. -4/13
B. 13/4
C. -13/4
D. 4/13

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asked by Unknown
  1. by now you should have slopes down pat.

    given slope is -13/4
    perp slope is negative reciprocal of that

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    posted by Steve

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