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