#include <iostream>
 
using namespace std;
 
int main(){
    int n;
    double x[4],y[4];
    cin>>n;
    while(n>0){
        for(int i=0;i<4;i++)cin>>x[i]>>y[i];
        if((y[0]-y[1])/(x[0]-x[1])==(y[2]-y[3])/(x[2]-x[3])){
            cout<<"YES"<<endl;
            n--;
        }
        else {
            cout<<"NO"<<endl;
            n--;
        }
    }
}