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