#include<iostream>
#include<stdio.h>

int main()
{
	int n;
	double x[4], y[4];
	std::cin >> n;
	while( n-- ){
		for( int i = 0; i < 4; i++ ){
	 		std::cin >> x[i] >> y[i];
		}
		
		double m[2];
		if( x[1] - x[0] != 0 ) m[0] = ( y[1] - y[0] ) / ( x[1] - x[0] );
		else m[0] = 0;
		if( x[3] - x[2] != 0 ) m[1] = ( y[3] - y[2] ) / ( x[3] - x[2] );
		else m[1] = 0;
		
		if( m[0] == m[1] ) puts("YES");
		else puts("NO");
	}

 	return 0;
}