#include <iostream>
using namespace std;

int main(){
    int n;
    double x1,y1,x2,y2,x3,y3,x4,y4;
    cin >> n;
    while(n--){
        cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
        if((y2-y1)/(x2-x1) == (y4-y3)/(x4-x3)) cout << "YES" << endl;
        else cout << "NO" << endl;
    }
}