#include<iostream>

using namespace std;

int main(){
  double x1, x2, x3, x4, y1, y2, y3, y4;
  double a1, a2, b1, b2;
  int n;
  cin >> n;
  for(int i =0; i < n; i++){
    cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
    
    a1 = x2 - x1;
    a2 = x4 - x3;
    b1 = y2 - y1;
    b2 = y4 - y3;
    
    if (b2 == a2 * b1 / a1) cout << "YES"<< endl;
    else cout << "NO" << endl;
  }
}