#include <iostream>
using namespace std;
int main(){
	int n , i , j ;
	double x1, x2 , x3 , x4 , y1 , y2 , y3 , y4 ;
	cin >> n ;
	double ab , cd ;
	for( i=1 ; i<=n ; i++ ){
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4 ;
		ab = ( y2 - y1 ) / ( x2 - x1 );
		cd = ( y4 - y3 ) / ( x4 - x3 );
		if( ab==cd )
			cout <<"YES" << endl;
		else 
			cout << "NO" << endl;
	}
}