#include <iostream>

using namespace std;

int main(){
  double x1,y1,x2,y2,x3,y3,x4,y4;
  int n;
  cin>>n;
  while(n--){
    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;
}