#include <iostream>
#include <cmath>

using namespace std;

int main()
{
	int n;
	cin>>n;
	for(int i=0;i<n;i++){
		double x[4],y[4];
		for(int j=0;j<4;j++)
			cin>>x[j]>>y[j];
		if(abs((x[3]-x[2])*(y[1]-y[0])-(x[1]-x[0])*(y[3]-y[2]))<1e-10)
			cout<<"YES"<<endl;
		else
			cout<<"NO"<<endl;
	}
	
	return 0;
}