#include<iostream>
#include<cstdio>
using namespace std;
int main(){
	double x1,x2,x3,x4,y1,y2,y3,y4;
	int n,i;
	cin>>n;
	for(i=0;i<n;i++){
		scanf("%lf %lf %lf %lf %lf %lf %lf %lf",&x1,&y1,&x2,&y2,&x3,&y3,&x4,&y4);
		if(((x2-x1) * (y4-y3) - (y2-y1) * (x4-x3)) != 0.0){
			cout<<"NO"<<endl;
		}else{
			cout<<"YES"<<endl;
		}
	}
	return 0;
}