#include <iostream>

using namespace std;

int main() {
  int n;
  cin >> n;

  double x1,y1,x2,y2,x3,y3,x4,y4;
  for (int dataset_i = 0; dataset_i < n; dataset_i++) {
    cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
    if (x2-x1 == 0 && x4-x3 == 0)
      cout << "YES";
    else if (y2-y1 == 0 && y4-y3 == 0)
      cout << "YES";
    else if ((x4-x3)/(y4-y3) == (y2-y1)/(x2-x1))
      cout << "YES";
    else
      cout << "NO";
    cout << endl;
  }

  return 0;
}