#include <iostream>
#include <cmath>

using namespace std;

int main(){
  int n;
  double x1,y1,x2,y2,x3,y3,x4,y4;
  cin >> n;
  while(n--){
  cin >>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;

  if(fabs((y1-y2)*(x3-x4)-(x1-x2)*(y3-y4))<10e-12){
      cout << "YES" << endl;
    }else {
      cout << "NO" << endl;
    }
  }
  return 0;
}