#include <stdio.h>

int main(){
	int num;
	double x1, y1;
	double x2, y2;
	double x3, y3;
	double x4, y4;
	double ax, ay;
	double bx, by;
	float s;
				
	scanf("%d", &num);	
	for(int i = 0; i < num; i++){
		scanf("%lf %lf %lf %lf %lf %lf %lf %lf", &x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4);

		ax = x2 - x1;
		ay = y2 - y1;
		bx = x4 - x3;
		by = y4 - y3;
		s = ax*by - ay*bx;
		if(s == 0.0){
			printf("YES\n");
		}else{
			printf("NO\n");
		}
	}
	
	return 0;
}