#include <iostream>
using namespace std;

int main(void)
{
	double x1, y1, x2, y2, x3, y3, x4, y4, tnd1, tnd2;
	int count;

	cin >> count;
	for (int i = 0; i < count; i++) {
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
		tnd1 = (y2 - y1) / (x2 - x1);
		tnd2 = (y4 - y3) / (x4 - x3);
		if (tnd1 == tnd2) cout << "YES" << endl;
		else cout << "NO" << endl;
	}
	
	return 0;
}