#include<stdio.h>
#include<math.h>

int main(){
	double x1,x2,x3,x4,y1,y2,y3,y4;
	int ans[100]={0};
	int n,i;
	
	scanf("%d",&n);
	
	for(i=0;i<n;i++){
		scanf("%lf %lf %lf %lf %lf %lf %lf %lf",&x1,&y1,&x2,&y2,&x3,&y3,&x4,&y4);
		
		if(((y1-y2)/(x1-x2)-(y3-y4)/(x3-x4))==0.0)printf("YES\n");
		else if(((x1-x2)==0) && ((x3-x4)==0))printf("YES\n");
		else printf("NO\n");
	}	
return 0;
}