#include<iostream>
using namespace std;
bool EQ(double a,double b){
  return a-0.000001<b&&b<a+0.000001;
}
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((x[3]-x[2])==0&&(x[1]-x[0])==0) cout<<"YES"<<endl;
    else if((x[3]-x[2])==0||(x[1]-x[0])==0) cout<<"NO"<<endl;
    else if(EQ((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;
}