#include<iostream>
#include<cmath>
using namespace std;
int main(){
	double x1, y1, x2, y2, x3, y3, x4, y4, p1, p2;
	int n;
	cin >> n;
	while(n--){
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
		p1 = (y2 - y1) / (x2 - x1);
		p2 = (y4 - y3) / (x4 - x3);
		if(abs(p1 - p2) < 1e-9)
			cout << "YES" << endl;
		else
			cout << "NO" << endl;	
	}
}