#include <iostream>
#include <cmath>
using namespace std;

int main(){
	cin.tie(0);
	ios::sync_with_stdio(false);

	int n;
	cin >> n;

	double x[4];
	double y[4];

	while(n > 0){
		for(int i = 0; i < 4; ++i){
			cin >> x[i] >> y[i];
		}

		double m1 = (y[0] - y[1]) / (x[0] - x[1]);
		double m2 = (y[2] - y[3]) / (x[2] - x[3]);

		cout << (m1 == m2 ? "YES" : "NO") << endl;

		--n;
	}

	return 0;
}