#include<complex>
#include<iostream>
using namespace std;

int main(){

  const double EPS = 1e-10;

  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)*(x4-x3) - (y4-y3)*(x2-x1)) < EPS )
      cout<<"YES"<<endl;
    else
      cout<<"NO"<<endl;
  }
}