#include <iostream>
using namespace std;

int main(){
    int n;
    double x1,y1,x2,y2,x3,y3,x4,y4,ll,lll;
    cin >> n;
    for(int i=0;i<n;i++){
        cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
        ll = (y2-y1)/(x2-x1);
        lll = (y4-y3)/(x4-x3);
        cout << ((ll == lll)? "YES" : "NO") << endl;
    }
}