#include<iostream>
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++){
		cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
		if((x1-x2)*(y3-y4)-(x3-x4)*(y1-y2)){
			cout<<"NO\n";
		}else{
			cout<<"YES\n";
		}
	}
}