#include<iostream>
#include<vector>
#include<algorithm>
#include<map>
#include<string>
#include<cmath>
#include<numeric>
using namespace std;


int main(void) {

  int n;
  cin >> n;
  for(int i=0; i<n; i++){
    double x1, y1, x2, y2;
    double x3, y3, x4, y4;
    cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
    if( abs((y2-y1)*(x4-x3) - (y4-y3)*(x2-x1)) < 0.0000000001 ) cout << "YES" << endl;
    else cout << "NO" << endl;
  }

  return 0;
}