#include<bits/stdc++.h>
using namespace std;

int main(){

    int n;
    double x1,y1,x2,y2,x3,y3,x4,y4;

    cin>>n;

    for(int i=0; i<n; i++){
      cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
      if(fabs((y2-y1)/(x2-x1)-(y4-y3)/(x4-x3))<=0.00000001)cout << "YES" << endl;
      else cout << "NO" << endl;
    }


  return 0;
}