#include <iostream>
using namespace std;

int main(void)
{
 	double x1, y1, x2, y2, x3, y3, x4, y4, tnd1, tnd2;
	int n; cin >> n;

	while (n--) {
            cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
            tnd1 = (y2 - y1) / (x2 - x1);
            tnd2 = (y4 - y3) / (x4 - x3);
            if (tnd1 == tnd2) cout << "YES" << endl;
            else cout << "NO" << endl;
        }

        return 0;
}