#include<iostream>
using namespace std;
int main(){
  double x1,y1,x2,y2,x3,y3,x4,y4,a,b,n;
  cin >> n;
  for(int i=0;i<n;i++){
    cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
    a = (y2-y1) * (x4-x3);
    b = (y4-y3) * (x2-x1);
    a == b ? cout << "YES" << endl : cout << "NO" << endl;
  }
  return 0;
}