#include<iostream>

using namespace std;

int main(){
	int n;
	cin >> n;

	double x1, y1, x2, y2, x3, y3, x4, y4;

	while (n--){
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
		if ((x2 - x1 == 0) && (x4 - x3 == 0)) cout << "YES\n";
		else
		cout <<(( (y2 - y1)*(x4 - x3) == (x2 - x1)*(y4 - y3) ) ? "YES\n" : "NO\n");
	}

	return 0;
}