#include <stdio.h>

int main()
{
	int n;
	double x[4],y[4];
	scanf("%d",&n);
	for(int i = 0; i < n; i++){
		for(int j = 0; j < 4; j++){
			scanf("%d %d",&x[j],&y[j]);
		}
		if((y[1] - y[0]) * (x[3] - x[2]) == (x[1] - x[0]) * (y[3] - y[2])){
			printf("YES\n");
		}else{
			printf("NO\n");
		}
	}
	return 0;
}