\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
Consider two sites \(E(-3, -1)\) and \(F(1, 3)\).
  1. Calculate the coordinates of the midpoint \(M\) of the segment \([EF]\).
  2. Calculate the gradient (slope) of the segment \([EF]\).
  3. Determine the gradient of the perpendicular bisector.
  4. Find the equation of the perpendicular bisector in the form \(y = mx + c\).

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