/* AOJ 0021 Parallelism */

#include <iostream>
#include <cmath>

using namespace std;

const double EPS = 1e-9;

int
main()
{
    int n;
    double x1, y1, x2, y2, x3, y3, x4, y4;
    double dx12, dy12, dx34, dy34;

    cin >> n;

    while (n--) {
        cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
        dx12 = x2 - x1;
        dy12 = y2 - y1;
        dx34 = x4 - x3;
        dy34 = y4 - y3;

        if (fabs(dx12 * dy34 - dx34 * dy12) < EPS)
            cout << "YES" << endl;
        else
            cout << "NO" << endl;
    }

    return 0;
}