using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[][] NArr(long n) => Enumerable.Repeat(0, (int)n).Select(_ => NList).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var t = NN;
        var ans = new bool[t];
        for (var u = 0; u < t; ++u)
        {
            var c = NList;
            if (c[0] == c[4] && c[1] == c[5] && c[2] == c[6] && c[3] == c[7]) ans[u] = true;
            var dbx = c[2] - c[0];
            var dby = c[3] - c[1];
            var dax = c[6] - c[4];
            var day = c[7] - c[5];
            if (dbx > dax && dbx * day == dax * dby) ans[u] = true;
        }
        WriteLine(string.Join("\n", ans.Select(f => f ? "Yes" : "No")));
    }
}