#include<iostream>
using namespace std;
 
int main(void)
{
	double xa,ya,xb,yb,xc,yc,xd,yd;
	int n;
	cin >> n;

	while( --n >=0)
	{
		cin >> xa >> ya >> xb >> yb >> xc >> yc >> xd >> yd;
 
		if( (yb - ya)/(xb - xa) == (yd - yc)/(xd - xc))
			cout << "YES" << endl;
		else
			cout << "NO" << endl;
	}

	return 0;
}