#include <iostream>
using namespace std;

int main(){
  int n;
  double x[4],y[4],dx[2],dy[2];
  cin >> n;
  for(int i=0;i<n;i++){
	for(int j=0;j<4;j++)cin >> x[j] >> y[j]; 
	dx[0] = x[1] - x[0];
	dx[1] = x[3] - x[2];
	dy[0] = y[1] - y[0];
	dy[1] = y[3] - y[2];
	if(dx[0]*dy[1] == dx[1]*dy[0]) cout << "YES" << endl;
	else cout << "NO" << endl;
  }
  return 0;
}