#include <iostream>
using namespace std;

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


    }
    return 0;
}

