#include<iostream>
using namespace std;;

int main(){

  int n;
  double x[4], y[4];

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

  return 0;
}