#include <iostream>
using namespace std;

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