#include <iostream>
#include <vector>
using namespace std;
 
int main() {
    int n;
    double ax,ay,bx,by,cx,cy,dx,dy;
    vector<int> r;
    cin >> n;
    for (int i=0; i<n; i++)
    {
        cin >> ax >> ay >> bx >> by >> cx >> cy >> dx >> dy;
        if (ax == bx)
        {
            cx == dx ? r.push_back(1) : r.push_back(0);
        } else if (cx == dx) {
            r.push_back(0);
        } else {
            (ay-by)/(ax-bx) == (cy-dy)/(cx-dx) ? r.push_back(1) : r.push_back(0);
        }
    }
    for (int i=0; i<n; i++)
    {
        r[i] == 1 ? cout << "YES" << endl : cout << "NO" << endl;
    }
    return 0;
}