#include <iostream>
using namespace std;

int main()
{
	int number;
	double x1,y1,x2,y2,x3,y3,x4,y4;
	double value,value_2;
	
	cin >> number;

	for(int i = 0 ; i < number ; i++)
	{
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;

		value = (y2 - y1) / (x2 - x1);
		value_2 = (y4 - y3) / (x4 - x3);

		if(value == value_2)
		{
			cout << "YES" << endl;
		}
		else
		{
			cout << "NO" << endl;
		}
	}

	return 0;
}