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

#define eps 0.00001

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;
    
        double r1, r2;
        r1 = (y2-y1)/(x2-x1);
        r2 = (y4-y3)/(x4-x3);

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