#include <stdio.h>
#include <iostream>
using namespace std;

int main() {
	long double x1, y1, x2, y2, x3, y3, x4, y4;
	int n; cin >> n;
	for (; n > 0; n--) {
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
		if ((x1-x2)*(y3-y4) == (y1-y2) * (x3-x4))
			cout << "YES\n";
		else
			cout << "NO\n";
	}
	return 0;
}
