#include <iostream>
using namespace std;

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