#include <iostream>
using namespace std;

int main(){
	int N;
	double x1, y1, x2, y2, x3, y3, x4, y4;
	double dx1, dy1, dx2, dy2;
	
	cin >> N;
	
	for(int i = 0; i < N; i++){
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
		dx1 = x2 - x1; dy1 = y2 - y1;
		dx2 = x4 - x3; dy2 = y4 - y3;
		if(dx1 * dy2 == dx2 * dy1) cout << "YES" << endl;
		else cout << "NO" << endl;
		
		//cout << dx1 * dy2 << " " << dx2 * dy1 << endl;
	}
	
	return 0;
}