#include <iostream>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)

int main(void)
{
	double x1, x2, x3, x4, y1, y2, y3, y4, p1, p2;
	int n;

	cin >> n;

	rep(i, n)
	{
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
		p1 = (y2 - y1) / (x2 - x1);
		p2 = (y4 - y3) / (x4 - x3);
		if (p1 == p2)
			cout << "YES" << endl;
		else
			cout << "NO" << endl;
	}

	return 0;
}