#include<stdio.h>

int main(){
	double x[4], y[4];
	int n, i;

	scanf("%d", &n);

	for (i = 0; i<n; i++){
		scanf("%lf %lf %lf %lf %lf %lf %lf %lf", &x[0], &y[0], &x[1], &y[1], &x[2], &y[2], &x[3], &y[3]);

		if (((y[1] - y[0]) / (x[1] - x[0])) == ((y[3] - y[2]) / (x[3] - x[2])))printf("YES\n");
		else printf("NO\n");
	}

	return 0;

}