#include<iostream>

using namespace std;

int main(){
	int n;
	cin >> n;
	while (n--){
		double a[2], b[2], c[2], d[2];
		cin >> a[0] >> a[1] >> b[0] >> b[1] >> c[0] >> c[1] >> d[0] >> d[1];
		if ((b[0] - a[0])*(d[1] - c[1]) - (b[1] - a[1])*(d[0] - c[0]) == 0) cout << "YES" << endl;
		else cout << "NO" << endl;
	}

	return 0;

}