#include <iostream>

using namespace std;

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