#include<iostream>

int main(){
	int n;
	std::cin >> n;
	for(int i = 0; i < n; ++i){
		double x1, x2, x3, x4;
		double y1, y2, y3, y4;
		std::cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
		if( (y1 - y2) / (x1 - x2) == (y3 - y4) / (x3 - x4) == 0)std::cout<<"YES"<<std::endl;
		else if( (y1 - y2) / (x1 - x2) == (y3 - y4) / (x3 - x4) )std::cout << "YES" << std::endl;
		else std::cout << "NO" << std::endl;
	}

	return 0;
}