#include <bits/stdc++.h>
using namespace std;

int main()
{
  double x[4], y[4], n;
  cin >> n;
  while (n--){
    for (int i = 0; i < 4; i++){
      cin >> x[i] >> y[i];
    }
    double a = (y[1] - y[0]) / (x[1] - x[0]);
    double b = (y[3] - y[2]) / (x[3] - x[2]);
    if (a == b) cout << "YES\n";
    else cout << "NO\n";
  }
}