#include <iostream>
#include <cmath>
using namespace std;

int main()
{
    int n;
    cin >> n;
    for(int i=0; i<n; i++)
    {
        double x1, x2, x3, x4;
        double y1, y2, y3, y4;
        cin >>  x1 >>  y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
        if((x4 - x3) * (y2 - y1) == (x2 - x1) * (y4 - y3))
        {
           cout << "YES" << endl; 
        }
        else
        {
            cout << "NO" << endl; 
        }
    }
    return 0;
}