#include <iostream>
using namespace std;
#define INF 1<<20

int main(){
	double x1, x2, x3, x4, y1, y2, y3, y4;
	int n;
	cin >> n;
	while( n-- ){
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
		double tan1, tan2;
		if( x1 - x2 == 0 ){
			tan1 = INF;
		}else{
			tan1 = (y1-y2) / (x1-x2);//max((x1-x2), -1*(x1-x2));
		}
		if( x3 - x4 == 0 ){
			tan2 = INF;
		}else{
			tan2 = (y3-y4) / (x3-x4);//max((x3-x4), -1*(x3-x4));
		}
		if( tan1 == tan2 ) cout << "YES" << endl;
		else cout << "NO" << endl;
	}
}