#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
	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;

		double a1,a2;
		a1 = (y2-y1)/(x2-x1);
		a2 = (y4-y3)/(x4-x3);

		if(a1 == a2){
			cout << "YES" << endl;
		}
		else cout << "NO" << endl;
	}
}