#include<iostream>
using namespace std;
int main(){
	double n=0,ax[100],ay[100],bx[100],by[100],cx[100],cy[100],dx[100],dy[100];
	cin>>n;
	for(int i=0;i<n;i++){
		cin>>ax[i]>>ay[i]>>bx[i]>>by[i]>>cx[i]>>cy[i]>>dx[i]>>dy[i];
	}
	for(int i=0;i<n;i++){
		double A=0,B=0;
		A=ax[i]*by[i]-bx[i]*ay[i];
		B=cx[i]*dy[i]-dx[i]*cy[i];
		if(A==B){
			cout<<"YES"<<endl;
		}
		else{
			cout<<"NO"<<endl;
		}
	}
}