#include <iostream>

using namespace std;

int main(void) {
	int n;
	cin >> n;
	while ( --n >= 0) {
		double x1, y1, x2, y2, x3, y3, x4, y4;
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;

		if ( (y2 - y1) / (x2 - x1) == (y4 - y3) / (x4 - x3))
			cout << "YES" << endl;
		else
			cout << "NO" << endl;
	}
	return 0;
}