#include <iostream>

using namespace std;

int main()
{
	int n;
	double x[4], y[4];
	
	cin >> n;
	cin >> x[0] >> y[0] >> x[1] >> y[1] >> x[2] >> y[2] >> x[3] >> y[3] ;

	while(n != 0)
	{
		if((y[1] - y[0]) / (x[1] - x[0]) == (y[3] - y[2]) / (x[3] - x[2]))
		{
			cout << "YES" << endl;
		}

		else
		{
			cout << "NO" << endl;
		}
		n--;
	}

	return 0;
}