#include <iostream>
using namespace std;
int main(){
    int n;
    cin >> n;
    double x1,x2,x3,x4,y1,y2,y3,y4;
    while(cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4){
        if (x1==x2){
            if(x3==x4)
                cout << "YES" << endl;
            else
                cout << "NO" << endl;
        }
        else if((y2-y1)*(x4-x3)==(y4-y3)*(x2-x1))
                cout << "YES" << endl;
            else
                cout << "NO" << endl;
    }

}