#include<bits/stdc++.h>
using namespace std;


void solve() {
    long long x1,x2,x3,y1,y2,y3;
    cin>>x1>>y1>>x2>>y2>>x3>>y3;
    
    // need to calculate whethere tan(a+b) = tan(c)
    // should we use double ?
    long long left = x3*(x2*y1 + y2*x1) ;
    long long right = y3*(x1*x2 - y1*y2);
    if(left == right )
        cout<<"Yes\n";
    else 
        cout<<"No\n";
}



int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.flush();
    cout<<fixed<<setprecision(9);
    #ifndef ONLINE_JUDGE
        freopen("input.txt","r",stdin);
        freopen("output.txt","w",stdout);
    #endif  
    int t=1;
    cin>>t;
    while(t--){
        solve();
    }
    return 0;
}