#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]) * (y[2] - y[3]) == (x[2] - x[3]) * (y[0] - y[1]) ){
	  cout<<"YES"<<endl;
        }else{
	  cout<<"NO"<<endl;
        }
    }
    return 0;
}