#include<iostream>
using namespace std;
int main(){
  int n;
  double x[4],y[4];
  
  cin >> n;
  
  while(n--){
    for(int i=0;i<4;i++){
      cin >> x[i] >> y[i];
    }
    
    if(x[0]==x[1]||x[2]==x[3]){
      if(x[0]==x[1]&&x[2]==x[3]) cout << "YES" << endl;
      else cout << "NO" << endl;
      continue;
    }
    
    double a,b;
    a = (y[0]-y[1])/(x[0]-x[1]);
    b = (y[2]-y[3])/(x[2]-x[3]);
    
    if(a == b) cout << "YES" << endl;
    else cout << "NO" << endl;
  }
  
  return(0);
}

