#include<stdio.h>
int main(){
	int n,i;
	float x1,y1,x2,y2,x3,y3,x4,y4;
	scanf("%d",&n);
	for(i=0;i<n;i++){
		scanf("%f%f%f%f%f%f%f%f",&x1,&y1,&x2,&y2,&x3,&y3,&x4,&y4);
		if(((x2-x1)/(x4-x3))==((y2-y1)/(y4-y3))){
			printf("YES\n");
		}else{
			printf("NO\n");
		}
	}
	return 0;
}