#include<stdio.h>

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