#include <iostream>
using namespace std;

int main() {
  int n;
  double x1, y1, x2, y2, x3, y3, x4, y4;
  double d1, d2;
  cin >> n;
  for (int i = 0; i < n; i++) {
    cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
    if (x2 == x1 && x4 == x3 ){
      cout << "NO" << endl;
    } else {
      if (x2 == x1 || x4 == x3 ){
        cout << "NO" << endl;
      }
      d1 = (y2 - y1) / (x2 - x1);
      d2 = (y4 - y3) / (x4 - x3);
      if (d1 == d2) {
        cout << "YES" << endl;
      }else{
        cout << "NO" << endl;
      }
    }
  }
}

