#include <iostream>
using namespace std;

int main() {
	double x[4],y[4],N;
	cin>>N;
	while(N--){
		for(int i=0;i<4;i++) cin>>x[i]>>y[i];
		if((x[1]-x[0])*(y[3]-y[2])==(x[3]-x[2])*(y[1]-y[0]))
		cout<<"YES"<<endl;
		else cout<<"NO"<<endl;
	}
	return 0;
}