#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;
		double a=y2-y1; double b=x2-x1;
		double d=y4-y3; double e=x4-x3;
 
		if(a*e-d*b==0) cout << "YES" << endl;
		else cout << "NO" << endl;
	}
	return 0;
}