#include <iostream>
using namespace std;
 
 int main(void){
	 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;
 }