#include <iostream>

using namespace std;

int main()
{
	int n;
	double x[4], y[4], vx[2], vy[2], kx, ky;

	cin >> n;

	for (int i=0; i<n; i++)
	{
		cin >> x[0] >> y[0] >> x[1] >> y[1] >> x[2] >> y[2] >> x[3] >> y[3];

		vx[0] = x[1]-x[0];
		vx[1] = x[3]-x[2];
		vy[0] = y[1]-y[0];
		vy[1] = y[3]-y[2];

		kx = vx[0]/vx[1];
		ky = vy[0]/vy[1];

		if(kx == ky) {
			cout << "YES" << endl;
		}
		else {
			cout << "NO"  << endl;
		}
	}

	return 0;
}