#include <iostream>
using namespace std;
using ll = long long;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int T; cin>>T;
    for (int i=0;i<T;i++){
        ll XA, YA, XB, YB, XC, YC;
        cin>>XA>>YA>>XB>>YB>>XC>>YC;
        cout << ((XA*YB+XB*YA)*XC==(XA*XB-YA*YB)*YC ? "Yes" : "No") << "\n";
    }

    return 0;
}