#include<iostream>
using namespace std;

int main(){
	int n;
	double a1,a2,b1,b2;
	double c1,c2,d1,d2;
	cin>>n;
	for(int i=0;i<n;i++){
		cin>>a1>>a2>>b1>>b2>>c1>>c2>>d1>>d2;
		if( (b2-a2)/(b1-a1) == (d2-c2)/(d1-c1) )
			cout<<"YES"<<endl;
		else 
			cout<<"NO"<<endl;
	}

}