#include	<iostream>
#include	<cstdio>
#include	<cmath>

using namespace std;

int main(void) {
	int ds;
	while( cin >> ds ) {
		for(int i = 0; i < ds; i++) {
			double X[4], Y[4];
			double a1, a2;
			double b1, b2;
			
			for(int j = 0; j < 4; j++) {
				cin >> X[j] >> Y[j];
			}
			a1 = abs(Y[1] - Y[0]);
			b1 = (X[1] - X[0]);
			
			a2 = abs(Y[3] - Y[2]);
			b2 = (X[3] - X[2]);
			
			a1 /= b1;
			a2 /= b2;
			
			if(a1 == a2) {
				cout << "YES" << endl;
			} else {
				cout << "NO" << endl;
			}
		}
	}
	return 0;
}