#include <iostream>
#include <cstdio>
#include <algorithm>
#include <cmath>
#include <string>

using namespace std;

int main() {

	int n;
	double x[4] = { 0 }, y[4] = { 0 }, ans[2] = { 0 };

	cin >> n;

	for (int i = 0; i < n; i++) {
		for (int j = 0; j < 4; j++) {
			cin >> x[j] >> y[j];
		}
		ans[0] = (y[1] - y[0]) / (x[1] - x[0]);
		ans[1] = (y[3] - y[2]) / (x[3] - x[2]);

		if (ans[0] == ans[1])
			cout << "YES" << endl;
		else
			cout << "NO" << endl;
		ans[0] = ans[1] = 0;
	}

	return 0;
}