1037-valid-boomerang.js

/**
 * 1037. Valid Boomerang
 * https://leetcode.com/problems/valid-boomerang/
 * Difficulty: Easy
 *
 * A boomerang is a set of 3 points that are all distinct and not in a straight line.
 *
 * Given a list of three points in the plane, return whether these points are a boomerang.
 */

/**
 * @param {number[][]} points
 * @return {boolean}
 */
var isBoomerang = function(points) {
  return (points[0][1] - points[1][1]) * (points[1][0] - points[2][0])
    !== (points[0][0] - points[1][0]) * (points[1][1] - points[2][1]);
};