Ruby

class Point
  attr_accessor :x, :y
  def initialize(x, y)
    @x = x
    @y = y
  end
  
  def ==(point)
    return (@x == point.x and @y == point.y)
  end
  
  def slope(point)
    if (@x == point.x)
      return Float::INFINITY
    else
      return Rational(point.y - @y, point.x - @x)
    end
  end
end

def is_boomerang(points)
  p1, p2, p3 = *points.map {|point| Point.new(point[0], point[1])}
  if (p1 == p2 or p2 == p3 or p1 == p3)
    return false
  end
  return p1.slope(p2) != p2.slope(p3)
end