#include <stdio.h>

int main()
{
	int n;
	double x1, x2, x3, x4, y1, y2, y3, y4, l, m;

	scanf("%d", &n);

	for (int i = 0; i < n; i++){
		scanf("%lf %lf %lf %lf %lf %lf %lf %lf", &x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4);

		l = (x2-x1)*(y4-y3);
		m = (x4-x3)*(y2-y1);
		if(l == m) puts("YES");
		else puts("NO");
	}

	return 0;
}