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