#include <iostream>
using namespace std;
int main(){
    double x[4],y[4];
    int n;
    cin>>n;
    for(int i=0;i<n;i++){
        for(int j=0;j<4;j++){
            cin>>x[j]>>y[j];
        }
        double d1,d2;
        d1=(y[1]-y[0])/(x[1]-x[0]);
        d2=(y[3]-y[2])/(x[3]-x[2]);
        if(d1==d2)cout<<"YES"<<endl;
        else cout<<"NO"<<endl;
    }
    return 0;
}
