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