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

}