#include <iostream>
#include <cmath>
using namespace std;
const double eps = 1e-9;
int main() {
    int n; cin >> n;
    for (int i = 0; i < n; ++i) {
        double x1, y1, x2, y2, x3, y3, x4, y4;
        cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
        x1 -= x2;
        y1 -= y2;
        x3 -= x4;
        y3 -= y4;
        cout << (abs(x1 * y3 - y1 * x3) < eps ? "YES" : "NO") << endl;
    }
    return 0;
}