#include <iostream>
using namespace std;
int main(){
    int n;
    cin >> n;
    double x1,x2,x3,x4,y1,y2,y3,y4;
    for(int i=0;i<n;i++){
        cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
        if(x4-x3==0 || x2-x1==0){
            if(x4-x3==0 && x2-x1==0)
                cout << "YES" << endl;
            else
                cout << "NO" << endl;
        }
        else{
            double p=(y2-y1)/(x2-x1);
            double q=(y4-y3)/(y2-y1);
            if(p==q)
                cout << "YES" << endl;
            else
                cout << "NO" << endl;
        }
    }

}