#include<iostream>
#include<cmath>
using namespace std;

#define EPS (1e-9)
 
double cross(double x1,double y1,double x2,double y2){
	return ((x1*y2)-(x2*y1));
}
int main(){
	int n;
	while(cin>>n){
		for(int i=0;i<n;i++){
			double x1,y1,x2,y2,x3,y3,x4,y4;
			cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
			if(EPS>fabs(cross((x2-x1) ,(y2-y1), (x4-x3), (y4-y3))))
				cout<<"YES"<<endl;
				else 
				cout<<"NO"<<endl;
		}
	}
	
}