#include <iostream>

using namespace std;
 
int main(){
  double x1,y1,x2,y2,x3,y3,x4,y4;
  int n;
 
  cin >> n;
 
  for( int i = 0 ; i < n ; i++ ){
 
    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;
}