#include<stdio.h>

int main(void)
{
	double x[4]={0},y[4]={0},x1,x2,y1,y2;
	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]);
		x1 = x[2]-x[1];   y1 = y[2]-y[1];
		x2 = x[4]-x[3];   y2 = y[4]-y[3];
		if(x1==0 && x2==0)
			printf("YES\n");
		else if((x1==0 && x2!=0) ||(x1!=0&& x2==0))
			printf("NO\n");
		else if(y1/x1 == y2/x2)
			printf("YES\n");
		else 
			printf("NO\n");

		i-=1;
	}
 return 0;
}