#include <iostream>
#include <vector>
#include <algorithm>
#include <stack>
#include <string>
#include <map>
#include <functional>
#include <cmath>
#include <cstdio>
using namespace std;

int main(){
  double x[4], y[4];
  int n;
  cin >> n;
  for(int j = 0; j < n; j++){
    for(int i = 0; i < 4; i++){
      cin >> x[i] >> y[i];
    }
    if((y[1] - y[0]) / (x[1] - x[0]) == (y[3] - y[2]) / (x[3] - x[2])){
      cout << "YES" << endl;
    }else{
      cout << "NO" << endl;
    }
  }
}