//0021
#include <bits/stdc++.h>
using namespace std;

int main(){
	double x1,y1,x2,y2,x3,y3,x4,y4;
	double AB,CD;
	int n;
	cin>>n;
	while(n--){
		cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;

		AB = (y1-y2)/(x1-x2);
		CD = (y3-y4)/(x3-x4);
		if(AB == CD)
			cout<<"YES"<<endl;

		else
			cout<<"NO"<<endl;
	}
	return 0;
}