#include <cstdio>

using namespace std;

int n;

double x[4], y[4];

int main()
{
	scanf("%d", &n);

	for(int c = 0; c < n; c++)
	{
		for(int i = 0; i < 4; i++)	
			scanf("%lf%lf",&x[i],&y[i]);

		puts((y[1]-y[0])/(x[1]-x[0])==(y[3]-y[2])/(x[3]-x[2])?"YES":"NO");
	}
	
	return 0;
}