morganlm morganlm
  • 13-04-2017
  • Mathematics
contestada

(6,-5) and (9,r) lie on a line with slope -4. find missing coordinate r

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texaschic101
texaschic101 texaschic101
  • 13-04-2017
(6,-5)(9,r)

 (r - (-5) / (9 - 6) = -4
(r + 5) / 3 = -4
r + 5 = -4 * 3
r + 5 = -12
r = -12 - 5
r = - 17 <===
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