#include<iostream>
using namespace std;

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

	return 0;
}