#include <iostream>
using namespace std;
int main(){
  
  double x1, y1, x2, y2, x3, y3, x4, y4;
  int dataSets;
  cin >> dataSets;
  for(int i=0;i<dataSets;i++){
    bool flag=false;
    cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;

    
    if((x2-x1)==0 || (x4-x3)==0){
      if((x2-x1) == (x4-x3)){
	if(x1==x3){
	  flag = true;
	}
      }
    }else if((y2-y1)/(x2-x1) == (y4-y3)/(x4-x3)){
      // cout << "here" << endl;
      flag = true;
    }

    if(flag){
      cout << "YES" << endl;
    }else{
      cout << "NO" << endl;
    }
    
  }

}
  