#include <iostream>
using namespace std;

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