#include<iostream>
using namespace std;

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

	for (; n--;){
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
		
		double a, b;

		a = (y2 - y1) / (x2 - x1);
		b = (y4 - y3) / (x4 - x3);


		if (a==b)
			cout << "YES" << endl;
		else
			cout << "NO" << endl;
		
	}
	return 0;
}