#include<iostream>
using namespace std;

int main(){

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