#include <iostream>
#include <cmath>
using namespace std;


int main() {
  int n;
  cin >> n;
  while (n--) {
    double x[4], y[4];
    for (int i = 0; i < 4; i++) cin >> x[i] >> y[i];
    if (((x[3] == x[2]) && (y[3] == y[2])) || (y[1] == y[0] && x[1] == x[0])) {
      cout << "YES" << endl;
    } else if ((x[3] == x[2] && y[1] == y[0]) || (x[1] == x[0] && y[3] == y[2])) {
      cout << "NO" << endl;
    }
    else if (abs((y[1] - y[0]) * (x[3] - x[2]) - (y[3] - y[2]) * (x[1] - x[0])) < 1e-15) {
      cout << "YES" << endl;
    } else {
      cout << "NO" << endl;
    }
    
  }
  return 0;
}