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

int main(){
   int n,i;
   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((max(y1,y2)-min(y1,y2))/(max(x1,x2)-min(x1,x2))==(max(y3,y4)-min(y3,y4))/(max(x3,x4)-min(x3,x4)))
         puts("YES");
      else
         puts("NO");
   }
   return 0;
}