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