#include <iostream>
#include <cmath>
#include <stdio.h>
using namespace std;

int main()
{
	double x1, x2, x3, x4, y1, y2, y3, y4, n;

	cin >> n;
	for (int i = 0; i < n; i++)
	{
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
		if (fabs((y2 - y1) * (x4 - x3) - (y4 - y3) * (x2 - x1)) < 0.0000000001) cout << "YES" << endl;
		else cout << "NO" << endl;
	}
	return 0;
}
