#include <iostream>
using namespace std;

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