#include<vector>
#include<iostream>
using namespace std;
double x1,y1,x2,y2,x3,y3,x4,y4;
int n;
int main()
{
  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;
}