#include<iostream>
#include<string>
#include<vector>
using namespace std;
string h(bool x) {
	if (x == true)return "YES";
	else return "NO";
}
int main() {
	double x1, x2, x3, x4, y1, y2, y3, y4;
	vector<bool>l;
	int n;
	cin >> n;
	for (int i = 0; i < n; i++){
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
		double k1, k2;
		k1 = (x1 - x2) / (y1 - y2);
		k2 = (x3 - x4) / (y3 - y4);
		if (k1 == k2)
			l.push_back(true);
		else l.push_back(false);
	}
	for (int i = 0; i < n; i++){
		cout << h(l[i]) << endl;
	}
	char c;
	cin >> c;
}