#include <iostream>
using namespace std;

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