#include <iostream>
using namespace std;

int main(){
	int t;
	double x1, y1, x2, y2, x3, y3, x4, y4;
	cin >> t;
	for(int i = 0; i < t; i++){
		//scanf("%lf%lf%lf%lf%lf%lf%lf%lf", &x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4);
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
		//printf("%f\n%f\n", (x2 - x1) * (y4 - y3), (x4 - x3) * (y2 - y1));
		if((x2 - x1) * (y4 - y3) == (x4 - x3) * (y2 - y1)) cout << "YES" << endl;
		else cout << "NO" << endl;
	}
	return 0;
}