#include <iostream>
#include <cmath>

using namespace std;
#define eps 1e-9

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

int main()
{
	solve();
	return(0);
}