#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; j++)
			cin >> x[j] >> y[j];
		a[0] = (y[0] - y[1]) / (x[0] - x[1]);
		a[1] = (y[2] - y[3]) / (x[2] - x[3]);
		if(a[0] == a[1])
			puts("YES");
		else
			puts("NO");
	}
	return 0;
}