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