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var isBoomerang = function (points) {
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  // if any two of the three points are the same point return false;
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  if (points[0][0] == points[1][0] && points[0][1] == points[1][1])
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    return false;
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  if (points[0][0] == points[2][0] && points[0][1] == points[2][1])
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    return false;
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  if (points[2][0] == points[1][0] && points[2][1] == points[1][1])
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    return false;
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  // if the points are in a straight line return false;
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  let slope1 = (points[0][1] - points[1][1]) / (points[0][0] - points[1][0]);
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  let slope2 = (points[1][1] - points[2][1]) / (points[1][0] - points[2][0]);
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  if (points[0][0] == points[1][0] && points[0][0] === points[2][0])
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    return false;
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  if (points[0][1] == points[1][1] && points[0][1] === points[2][1])
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    return false;
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  if (slope1 === slope2) return false;
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  return true;
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};