#include<iostream>
using namespace std;

int main() {
    double n,x[4],y[4],judge1,judge2;
    cin >> n;
    for(int i=0;i<n;i++){
        for(int j=0;j<4;j++) cin>>x[j]>>y[j];
        judge1=(y[1]-y[0])/(x[1]-x[0]);
        judge2=(y[3]-y[2])/(x[3]-x[2]);
        if(judge1==judge2)cout << "YES";
        else cout << "NO";
        cout << endl;
    }
}