#include<stdio.h>

int main(void)
{
	double x[4]={0},y[4]={0};
	int i;
	scanf("%d",&i);

	while(i!=0)
	{
		scanf("%f %f %f %f %f %f %f %f",&x[0],&y[0],&x[1],&y[1],&x[2],&y[2],&x[3],&y[3]);
		if(x[1]-x[0] == 0 && x[3]-x[2] == 0)
			printf("YES\n");
		else if(x[1]-x[0] == 0 || x[3]-x[2] == 0)
			printf("NO\n");
		else if(y[1]-y[0] == 0 && y[3]-y[2] == 0)
			printf("YES\n");
		else if(y[1]-y[0] == 0 || y[3]-y[2] == 0)
			printf("NO\n");
		else if((y[1]-y[0])/(x[1]-x[0]) == (y[3]-y[2])/(x[3]-x[2]))
			printf("YES\n");
		else 
			printf("NO\n");

		i-=1;
	}
 return 0;
}