#include <stdio.h>

int
main(void)
{
	int n;

	scanf("%d", &n);

	double x1, y1, x2, y2, x3, y3, x4, y4;
	
	while (n--) {
		scanf("%lf %lf %lf %lf %lf %lf %lf %lf",
				   &x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4);

		printf("%s\n", (((y2 - y1)/(x2 - x1) ==(y4 - y3)/(x4 - x3)) ? "YES" : "NO"));
	}

	return 0;
}