#include <iostream>
#include <cmath>
using namespace std;
int main(){
    int n;
    cin>>n;
    while(n--){
        float x1, y1, x2, y2, x3, y3, x4, y4;
        cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
        if(((y1-y2)/(x1-x2))==((y3-y4)/(x3-x4)))
            cout<<"YES"<<endl;
        else
            cout<<"NO"<<endl;
    }
    return 0;
}
