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

struct Point{
    long long y;
    long long x;
};

int main(){
    int T;
    cin>>T;

    while(T--){
        Point A,B,C;
        cin>>A.x>>A.y;
        cin>>B.x>>B.y;
        cin>>C.x>>C.y;
        if((A.x*B.x-A.y*B.y)*C.y==(A.y*B.x+A.x*B.y)*C.x)cout<<"Yes"<<endl;
        else cout<<"No"<<endl;
    }
}