#include <iostream>
#include <math.h>
#define REP(i,n) for(int i = 0; i < (n); ++i)
using namespace std;

// ?¨±?????????????????
#define EPS (1e-10)

int main(){
	int n;
	cin >> n;
	double x1,y1,x2,y2,x3,y3,x4,y4;
	for(int i = 0; i < n; ++i){
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
        if ( fabs( (y2-y1)*(x4-x3) - (y4-y3)*(x2-x1) ) < EPS) {
            cout << "YES" << endl;
        }
        else {
            cout << "NO" << endl;
        }
	}
    return 0;
}