#include<iostream>

using namespace std;

int main(){

	int n; cin >> n;
	double x[4],y[4]; //??\????????§?¨?

	for(int i=0;i<n;i++){
		for(int j=0;j<4;j++){
			cin >> x[j] >> y[j];
		}

		if( (y[1] - y[0]) / (x[1] - x[0]) == (y[3] - y[2])/(x[3] - x[2]) ){
			cout << "YES" << endl;
		}else{
			cout << "NO" << endl;
		}
	}
	return 0;
}