#include<bits/stdc++.h>
using namespace std;
int main(){
  
  int n;
  double x1,x2,x3,x4,y1,y2,y3,y4,ans1,ans2;
  cin >> n;
  for(int i=0;i<n;i++){
    cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
    
    if(x1==x2){
      if(x3==x4) cout << "YES" << endl;
      else cout << "NO" << endl;
    }
    else if(x3==x4&&x1!=x2) cout << "NO" << endl;
    else if(y1==y2){
      if(y3==y4) cout << "YES" << endl;
      else cout << "NO" << endl;
    }
    else if(y3==y4&&y1!=y2) cout << "NO" << endl;
    else {
      ans1 = (y1-y2)/(x1-x2);
      ans2 = (y3-y4)/(x3-x4);
      
      if(ans1==ans2) cout << "YES" << endl;
      else cout << "NO" << endl;
    }
  }
  
  return (0);
}