#include <iostream>
#include <algorithm>
#include <cstdio>
using namespace std;

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