#include <iostream>
#include <complex>
using namespace std;
 
int main()
{
    int n;
    cin>>n;
    complex<double> a,b,c,d;
    while(n--)
    {
        cin>>a.real()>>a.imag()>>b.real()>>b.imag()>>c.real()>>c.imag()>>d.real()>>d.imag();
        a=a-b;
        c=c-d;
 
        cout<<(a.real()*c.imag()-a.imag()*c.real()==0?"YES":"NO")<<endl;
    }
    return 0;
}