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

