#include <bits/stdc++.h>
using namespace std;
int main()
{
    int n;
    cin>>n;
    while(n--)
    {
        float x1,x2,y1,y2,x3,x4,y3,y4;
        cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
        float m1=(y2-y1)/(x2-x1);
        float m2=(y4-y3)/(x4-x3);
        if(m1==m2)
            cout<<"YES"<<endl;
        else
            cout<<"NO"<<endl;
    }



    return 0;
}

