#include <iostream>

using namespace std;

int main()
{
    double x1, y1, x2, y2, x3, y3, x4, y4;
    double ang_ab, ang_cd;
    int i, n;

    cin >> n;
    for (i = 0; i < n; i++) {
    cin >> x1 >> y1 >> x2 >> y2
        >> x3 >> y3 >> x4 >> y4;

    ang_ab = (y1 - y2) / (x1 - x2);
    ang_cd = (y3 - y4) / (x3 - x4);

    if (x1 == x2 && x3 == x4) {
      cout << "YES" << endl;
    } else if (ang_ab == ang_cd) {
      cout << "YES" << endl;
    } else {
      cout << "NO"  << endl;
    }
  }

  return 0;
}