#include<iostream>

using namespace std;


int main(){
	
	int n;
	cin >> n;
	
	double x1, y1, x2, y2, x3, y3, x4, y4;
	
	while(n--) {
		
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
		
		double a = ( x2 - x1 ) / ( y2 - y1 );
		double b = ( x4 - x3 ) / ( y4 - y3 );
		
		if( a == b)
		cout << "YES\n";
		
		else
		cout << "NO\n";
		
	}
	
    return 0;
}
