#include <iostream>
#include <cstdio>

//#define PI 3.141592653589

using namespace std;



int main()
{
	/*
	int n, a, min=1000000, max=-1000000;
	long sum=0;
	
	cin >> n;
	for (int i=0; i<n; i++)
	{
		cin >> a;
		if (a < min) min = a;
		if (a > max) max = a;
		sum += a;
	}
	cout << min << " " << max << " " << sum << endl;
	*/
	
	int n;
	double x1, y1, x2, y2, x3, y3, x4, y4;
	double katamuki1, katamuki2;
	
	cin >> n;
	for (int i=0; i<n; i++)
	{
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
		katamuki1 = (y2-y1) / (x2-x1);
		katamuki2 = (y4-y3) / (x4-x3);
		if (katamuki1 == katamuki2) cout << "YES" << endl;
		else cout << "NO" << endl;
	}
	
	return 0;
}