#include <iostream>
#include <math.h>
using namespace std;

int main(){
    
    int n;
    cin>>n;
    
    double x[4],y[4];
    for (int i = 0; i < n; ++i) {
        cin>>x[0]>>y[0]>>x[1]>>y[1]>>x[2]>>y[2]>>x[3]>>y[3];
        double d[2];
        
        
        d[0] = (y[1] - y[0])/(x[1] - x[0]);
        d[1] = (y[3] - y[2])/(x[3] - x[2]);
        
        if (d[0] == d[1]) {
            cout<<"YES"<<endl;
        }else{
            cout<<"NO"<<endl;
        }
    }
    
}