#include<iostream>
using namespace std;

#define EPS (1e-10)
#define EQ(a,b) (abs((a)-(b)) < EPS)
#define EQV(a,b) ( EQ( (a).real() , (b).real() ) && EQ( (a).imag(), (b).imag() ) )

int main(){
  int n;
  double x1,y1,x2,y2,x3,y3,x4,y4;
  cin>>n;
  while(n--){
    cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
    if( abs( (y2-y1)/(x2-x1) - (y4-y3)/(x4-x3)) <= EPS ){
      cout<<"YES"<<endl;
    }else{
      cout<<"NO"<<endl;
    }
  }
}