#include <iostream>
using namespace std;

int main(){
    int n;
    cin >> n;
    while(n--){
        double x[4],y[4],ll,lll;
        for(int i=0;i<4;i++) cin >> x[i] >> y[i];
        ll = (y[1]-y[0])/(x[1]-x[0]);
        lll = (y[3]-y[2])/(x[3]-x[2]);
        cout << ((ll == lll)? "YES" : "NO") << endl;
    }
    return 0;
}