#include <iostream>
#include <cstdlib>
using namespace std;

int main(void){

	int n;
	double x1,y1,x2,y2,x3,y3,x4,y4;
	cin>>n;
	for (int i=0; i<n; i++){
		cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
		if(abs((y1-y2)*(x3-x4)-(y3-y4)*(x1-x2))<1e-10) cout<<"YES"<<endl;
		else cout<<"NO"<<endl;
	}

	return 0;
}