csbeemus csbeemus
  • 15-10-2017
  • Mathematics
contestada

is the line through points P(1,9) and Q(9,6) perpendicular to the line through points R(-6,0) and S(-9,8)? Explain?

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Аноним Аноним
  • 17-10-2017
Attached the solution and work.
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