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