#include <iostream>
#include <cmath>
using namespace std;
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;
        double m1 = (y1-y2)/(x1-x2);
        double m2 = (y3-y4)/(x3-x4);
        cout << (m1 == m2 ? "YES" : "NO") << endl;
    }
    return 0;
}