#include<iostream>
using namespace std;
int main(){
  int n;
  cin >>n;
  while(n--){
    double a[2],b[2],c[2],d[2];
    cin >>a[0]>>a[1]>>b[0]>>b[1]>>c[0]>>c[1]>>d[0]>>d[1];
    if((b[0]-a[0])*(d[1]-c[1])-(b[1]-a[1])*(d[0]-c[0]) == 0) cout <<"YES"<<endl;
    else cout <<"NO"<<endl;
  }
  return 0;
}