#include<iostream>
using namespace std;

int main(){
  double x1,y1,x2,y2,x3,y3,x4,y4;
  int n;
  cin>>n;
  for(int i=0;i<n;i++){
    cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
    if((y1-y2)/(x1-x2) == (y3-y4)/(x3-x4))cout<<"YES"<<endl;
    else cout<<"NO"<<endl;}
    return 0;

}