#include<iostream>
#include<cstdio>

using namespace std;

int main(){
	int n;
	cin >> n;

	double x1, y1, x2, y2, x3, y3, x4, y4;

	for (int i = 0; i < n;i++){
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
		double a, b;
		a = (y2 - y1) / (x2 - x1);
		b = (y4 - y3) / (x4 - x3);
		(a == b) ? cout << "YES" << endl : cout << "NO" << endl;
	}

	return 0;
}