#include <iostream>
using namespace std;

int main(){
  double x1,y1,x2,y2,x3,y3,x4,y4;
  int n; cin>>n;
  while(n--){
    cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
    double tanAB = (y2-y1)/(x2-x1);
    double tanCD = (y4-y3)/(x4-x3);
    if(tanAB == tanCD)
      cout<<"YES"<<endl;
    else
      cout<<"NO"<<endl;
  }
  return 0;
}