#include <stdio.h>

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

	int i;


	scanf("%d", &n);

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

		if((x2 - x1) * (y4 - y3) - (y2 - y1) * (x4 - x3))
			printf("NO\n");
		else
			printf("YES\n");
	}

	return 0;
}