#include <iostream>
using namespace std;
int main(){
	int n;
	cin >> n;
	while(n--){
		double x1, y1, x2, y2, x3, y3, x4, y4, o;
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
		o = (x2-x1)*(y4-y3) - (y2-y1)*(x4-x3);
		if(!o) cout << "YES" << endl;
		else cout << "NO" << endl;
	}
	return 0;
}