#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;
    double abx=x1-x2;
    double aby=y1-y2;
    double cdx=x3-x4;
    double cdy=y3-y4;
    if(abx == aby)
      cout<<"YES"<<endl;
    else if(abx || aby){
      cout<<"NO"<<endl;
    }else if(aby/abx == cdy/cdx)
      cout<<"YES"<<endl;
    else
      cout<<"NO"<<endl;
  }
  return 0;
}