#include <iostream>

using namespace std;
 
int main() 
{
     int n;
    double x1,y1,x2,y2,x3,y3,x4,y4,m1,m2;
     cin>>n;
     for(int i=0;i<n;i++)
   {
        int p=0;
        cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
        if(x1==x2&&x3==x4){p=1;}
        else if(x1==x2||x3==x4){}
        else if((y2-y1)/(x2-x1)==(y4-y3)/(x4-x3)){p=1;}
        if(p==1)cout<<"YES"<<endl;
        else cout<<"NO"<<endl;
    }
     
    return 0;
}