#include <stdio.h>

int main()
{
	int num ;
	double ax, ay, bx, by, cx, cy, dx, dy ;

	scanf("%d",&num) ;
	for( int i = 0 ; i < num ; i ++ )
	{
		scanf("%lf %lf %lf %lf %lf %lf %lf %lf", &ax , &ay , &bx , &by , &cx , &cy , &dx , &dy ) ;

		if( (by-ay)/(bx-ax) == (dy-cy)/(dx-cx) ) printf("YES\n") ;
		else printf("NO\n") ;
	}
	return 0;
}