#include<iostream>
#include<cmath>
using namespace std;
#define EPS 1e-10

double a,b,c,d,e,f,g,h;
double det(){
	double dx1,dy1,dx2,dy2;
	dx1 = a-c;
	dy1 = b-d;
	dx2 = e-g;
	dy2 = f-h;
	return dx1*dy2 - dy1*dx2;
}
int main(){
	int n;
	cin>>n;
	while(n--){
		cin>>a>>b>>c>>d>>e>>f>>g>>h;
		cout<<(fabs(det())<EPS?"YES":"NO")<<endl;
	}
	return 0;
}