#include <bits/stdc++.h>
using namespace std;

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

  return 0;
}