#include <iostream>
#include <algorithm>
#include <string>
#include <cmath>
#include <stack>
using namespace std;

int main(){
	int n;
	cin >> n;
	long double x1,y1,x2,y2,x3,y3,x4,y4;
	while(cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4){
		if((y1 - y2)/(x1 - x2) == (x3 - x4)/(y3 - y4))cout << "YES" << endl;
		else cout << "NO" << endl;
	}
}
