#define	_USE_MATH_DEFINES
#include <iostream>
#include <algorithm>
#include <functional>
#include <vector>
#include <cstdio>
#include <string>
#include <cmath>
#include <cfloat>
#include <map>
#include <queue>
#include <stack>
#include <list>
using namespace std;

int main(){

	int n;
	cin>>n;
	double x1,y1,x2,y2,x3,y3,x4,y4;
	while(n>0){
		
	cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;

		
		if((y4-y3)/(x4-x3)==(y2-y1)/(x2-x1))
			cout<<"YES"<<endl;
		else
			cout<<"NO"<<endl;
		
		n--;
	}
	
	
}