#include<iostream>
#include<string>
#include<cmath>
#include<queue>
#include<vector>
#include<functional>
using namespace std;
int main() {
	int n;
	double x1, y1, x2, y2, x3, y3, x4, y4;
	cin >> n;
	for (int z = 0; z < n; z++) {
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
		double a = 99999, b = 99999;
		a = (x2 - x1)*(y4 - y3);
		b = (x4 - x3)*(y2 - y1);
		if (a == b) cout << "YES" << endl;
		else cout << "NO" << endl;
	}
}