#include<bits/stdc++.h>
using namespace std;

#define EPS (1e-10)

int main(){
    int n;
    double x1,x2,x3,x4,y1,y2,y3,y4;
    cin>>n;
    for(int i=0;i<n;i++){
        cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
 
 
        double a,b;
        a=(y2-y1)/(x2-x1);
        b=(y4-y3)/(x4-x3);
        (fabs(a-b)<=EPS)? cout<<"YES"<<endl : cout<<"NO"<<endl;
    }
    return 0;
}