#include <iostream>
#include <cmath>
using namespace std;
#define EPS 1e-10

int main(){
  int n;
  double x1,x2,x3,x4,y1,y2,y3,y4;
  cin >> n;
  while(n--){
    cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
    if(abs((x4-x3)*(y2-y1) - (x2-x1)*(y4-y3)) < EPS) cout << "YES" << endl;
    else cout << "NO" << endl;
  }
}