#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 (abs((y[1] - y[0]) * (x[3] - x[2]) - (y[3] - y[2]) * (x[1] - x[0])) < 1e-9) {
      cout << "YES" << endl;
    } else {
      cout << "NO" << endl;
    }
    
  }
  return 0;
}