#include <iostream>
#include <cmath>
using namespace std;

int n;
const double EPS = 1e-8;

int main()
{
    cin >> n;
    double x1, y1, x2, y2, x3, y3, x4, y4;
    for(int i = 0; i < n; i++) {
        cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
        double a1 = (y2 - y1) / (x2 - x1);
        double a2 = (y4 - y3) / (x4 - x3);
        if(fabs(a1 - a2) < EPS) 
            cout << "YES" << endl;
        else 
            cout << "NO" << endl;
    }    
}