#include <iostream>

using namespace std;

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

  cin >> n;

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

    if ((y2 - y1) / (x2 - x1) == (y3 - y4) / (x3 - x4)) {
      cout << "YES" << endl;
    } else {
      cout << "NO" << endl;
    }
  }

  return 0;
}