#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[0]-y[1])/(x[0]-x[1]);
        lll = (y[2]-y[3])/(x[2]-x[3]);
        cout << ((ll == lll)? "YES" : "NO") << endl;
    }
}