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