#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 (ang_ab == ang_cd) {
      cout << "YES" << endl;
    } else {
      cout << "NO"  << endl;
    }
  }

  return 0;
}