#include <iostream>
using namespace std;

int main(int argc, char const* argv[]) {
  int n;
  cin >> n;
  for (int i = 0; i < n; i += 1) {
    float x1, y1, x2, y2, x3, y3, x4, y4;
    cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
    float AB, CD;
    AB = (y2 - y1) / (x2 - x1);
    CD = (y4 - y3) / (x4 - x3);
    if (AB == CD) cout << "YES" << endl;
    else cout << "NO" << endl;
  }
  return 0;
}