#include <iostream>
#include <math.h>

#define REP(i,n) for(int i = 0; i < (n); ++i)
using namespace std;

int main(){
    
    int n;
    cin>>n;
    
    double x[4],y[4];
    REP(i, n){
        REP(j, 4)cin>>x[j]>>y[j];
        if ((y[1] - y[0])/(x[1] - x[0]) == (y[3] - y[2])/(x[3] - x[2])) cout<<"YES"<<endl;
        else cout<<"NO"<<endl;
    }
    
}