#include <iostream>
using namespace std;
 
int main()
{
  int n;
  while (cin >> n) {
    for (int i = 0; i < n; ++i) {
      double x1, y1, x2, y2, x3, y3, x4, y4, g1, g2;
      cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
 
      if ((x1-x2)*(y3-y4) == (x3-x4)*(y1-y2))
    cout << "YES" << endl;
      else
    cout << "NO" << endl;
    }
  }
  return 0;
}