#include<iostream>
using namespace std;

int main()
{
    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( ((y2-y1)/(x2-x1)) == ((y4-y3)/(x4-x3)) ) cout << "YES\n";
        else cout << "NO\n";
    }
    return 0;
}