#include <iostream>
#include <cmath>
using namespace std;
int main(){
  double x1,x2,x3,x4;
  double y1,y2,y3,y4;
  int n;
  cin >> n;
  while(n--){
    cin >> x1>> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
  if(fabs((x2 - x1)*(y4 - y3) - (y2 - y1)*(x4 - x3) ) < 10e-12) cout << "YES"<<endl;
  else cout << "NO" << endl;
}
  return 0;
}