#include<iostream>
using namespace std;

int main(){
    int n;
    double x1, x2, x3, x4, y1, y2, y3, y4;
    cin >> n;
    for(; n; n--){
        cin >>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
        /*if((x1-x2)==0 || (x3-x4)==0){
            if((x1-x2)==0 && (x3-x4)==0){
                cout << "YES" << endl;
            }else{
                cout << "aNO" << endl;
            }
        }else */if((y1-y2)/(x1-x2) == (y3-y4)/(x3-x4)){
            cout << "YES" << endl;
        }else{
            cout << "NO" << endl;
        }
    }
    return 0;
}