#include<iostream>
#include<cmath>
using namespace std;
int main(){
	int n;
	cin >> n;
	while(n--){
		double x[4], y[4], p1 ,p2;
		for(int i = 0; i < 4; i++) cin >> x[i] >> y[i];
		p1 = (y[1] - y[0]) / (x[1] - x[0]);
		p2 = (y[3] - y[2]) / (x[3] - x[2]);
		if(abs(p1 - p2) < 1e-5) cout << "YES" << endl;
		else cout << "NO" << endl;	
	}
}