#include<iostream>
using namespace std;

int main(){
	int n;
	double x[4], y[4], a[2];
	cin >> n;
	for(int i = 0; i < n; i++){
		for(int j = 0; j < 4; i++)
			cin >> x[j] >> y[j];
		a[1] = (y[1] - y[2]) / (x[1] - x[2]);
		a[2] = (y[3] - y[4]) / (x[3] - x[4]);
		if(a[1] == a[2])
			puts("YES");
		else
			puts("NO");
	}
	return 0;
}