#include <iostream>
using namespace std;

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