Respuesta :

Answer:

  6

Step-by-step explanation:

The slope (m) is given by ...

  m = (y2 -y1)/(x2 -x1)

Filling in the given values, we have an equation we can solve for r.

  -3 = (-4 -8)/(r -2)

  r -2 = -12/-3 . . . . . multiply by (r-2)/-3

  r = 6 . . . . . . . . . . . add 2

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