#include<iostream>
using namespace std;
int main(){
    int n;
    cin>>n;
    for(int i=0;i<n;i++){
        double 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 if((x1-x2==0&&x3-x4==0)||(y1-y2==0&&y3-y4==0))cout<<"YES"<<endl;
        else cout<<"NO"<<endl;
    }
}