#include<cstdio>
#include<cmath>

int main(){
	int n;
	double x[4], y[4];
	scanf("%d", &n);
	for(int i = 0; i < n; i++){
		scanf("%lf %lf %lf %lf %lf %lf %lf %lf", &x[0],&y[0],&x[1],&y[1],&x[2],&y[2],&x[3],&y[3]);
		if(fabs(x[0] - x[1]) < 0.000001){
			if(fabs(x[2] - x[3]) < 0.000001){
				printf("YES\n");
			}else{
				printf("NO\n");
			}
		}else{
			if(fabs((y[1] - y[0])/(x[1] - x[0]) - (y[3] - y[2])/(x[3] - x[2])) < 0.000001){
				printf("YES\n");
			}else{
				printf("NO\n");
			}
		}
	}
	return 0;
}