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

#define eps 0.000001

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;
    
        vector<double> v1, v2;
        v1.push_back(x2 - x1);
        v1.push_back(y2 - y1);
        v2.push_back(x4 - x3);
        v2.push_back(y4 - y3);
    
        double r1, r2;
        r1 = v1.at(1)/v1.at(0);
        r2 = v2.at(1)/v2.at(0);

        if( fabs(r1-r2) < eps ) cout << "YES\n";
        else cout << "NO\n";
    }
    return 0;
}