#include <iostream>
using namespace std;

int main(){
	double x[4], y[4];
	int n;
	double a[2];
	
	cin >> n;
	
	for(int i = 0; i < n; i++){
		for(int j = 0; j < 4; j++){
			cin >> x[j] >> y[j];
		}
		a[0] = (y[1] - y[0]) / (x[1] - x[0]);
		a[1] = (y[3] - y[2]) / (x[3] - x[2]);
		
		if(a[0] == a[1]){
			cout << "YES" << endl;
		}else {
			cout << "NO" << endl;
		}
	}
	
	return 0;
}