#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;

    double katamuki1,katamuki2;
    katamuki1 =   ( y1 - y2 ) / ( x1 - x2 );
    katamuki2 =   ( y3 - y4 ) / ( x3 - x4 );
    if( katamuki1 == katamuki2 )cout << "YES" << endl;
    else cout << "NO" << endl;
  }
  return 0;
}