#include <iostream>
#include <utility>

using namespace std;

int main() {
    int n;
    cin >> n;
    while (n--) {
        double x1,x2,x3,x4,y1,y2,y3,y4,p1,p2;
        cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
        if (x2 - x1  == 0 || x4 - x3 == 0) {
            cout << "No" << endl;
            continue;
        }
        p1 = (y2 - y1) / (x2 - x1);
        p2 = (y4 - y3) / (x4 - x3);
        if(p1 == p2)
            cout << "YES" << endl;
        else
            cout << "NO" << endl;
    }
    
    return 0;
}