#include <iostream>
using namespace std;

int main(){
	int n;
	cin >> n;
	for(int i = 0; i < n; i++){
		float x[4], y[4];
		for(int j = 0; j < 4; j++){
			cin >> x[j] >> y[j];
		}
		float ab = 99999999, cd = 99999999;
		if(x[0] != x[1]) ab = (y[0]-y[1]) / (x[0]-x[1]);
		if(x[2] != x[3]) cd = (y[2]-y[3]) / (x[2]-x[3]);
		if(ab == cd) cout << "YES"<< endl;
		else cout << "NO" << endl;
	}
	return 0;
}