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