#include <iostream>

using namespace std;

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