#include <bits/stdc++.h>
#define rep(i,l,n) for(int i=l;i<n;i++)
using namespace std;
 
int main(){
    int n;
    cin>>n;
    rep(i,0,n){
        int ans=0;
        double x1,y1,x2,y2,x3,y3,x4,y4,m1,m2;
        cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
        if(x1==x2||x3==x4){
            if(x1==x2&&x3==x4) ans=1;
        }else{
            m1=(y2-y1)/(x2-x1);
            m2=(y4-y3)/(x4-x3);
            if(fabs(m1-m2)<1e-10) ans=1;
        }
        if(ans) cout<<"YES"<<endl;
        else cout<<"NO"<<endl;
    }
}