#include<iostream>
using namespace std;
int main(){
  int n;
  double x1,y1,x2,y2,x3,y3,x4,y4,lI,lII;
  cin >> n;
  while(n--){
    cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
    cout << ((y2-y1)/(x2-x1) == (y4-y3)/(x4-x3) ? "YES" : "NO") << endl;
  }
}