#include<iostream>
#include<algorithm>
using namespace std;

int main(){

  double ax,ay,bx,by,cx,cy,dx,dy;
  double n,s,t;

  cin >> n;

  for(int i=0;i<n;i++){
    cin >> ax >> ay >> bx >> by >> cx >> cy >> dx >> dy;

    s = (ay - by) / (ax - bx);
    t = (cy - dy) / (cx - dx);

    if(s == t) cout << "YES" << endl;
    else cout << "NO" << endl;

  }
}