#include <iostream>

using namespace std;

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