#include <iostream>
#include <algorithm>
#include <cmath>
using namespace std;

#define EPS 1e-5
#define EQ(a, b) (fabs((a)-(b)) < EPS)

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