#include <iostream>
int main()
{
  int n;
  std::cin >> n;
  double x1, y1, x2, y2, x3, y3, x4, y4;
  while (n--) {
    std::cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
//    std::cout << x1 << " " << y1 << " " << x2 << " " << y2 << " " << x3 << " " << y3 << " " << x4 << " " << y4;
    double a1, a2;
    a1 = (x2 - x1) / (y2 - y1);
    a2 = (x4 - x3) / (y4 - y3);
    if ((a1 - a2) * (a1 - a2) < 0.00001) std::cout << "YES" << std::endl;
    else                                 std::cout << "NO"  << std::endl;
  }
  return 0;
}