#include <iostream>
using namespace std;
int main(void)
{
    double x[4];
    double y[4];
    int n;
    cin >> n;
    while(n--){
        for(int i=0; i<4; i++){
            cin >> x[i] >> y[i];
        }
        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;
}