//Parallelism
#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((x1-x3)==0 && (x2-x4)==0) cout<<"YES"<<endl;
    else if((y1-y3)/(x1-x3)==(y2-y4)/(x2-x4)) cout<<"YES"<<endl;
    else cout<<"NO"<<endl;
  }

  return 0;
}