#include <iostream>
main(){int n,j,i=j=0;double x[4],y[4];std::cin>>n;for(;i<n;i++){for(;j<4;j++)std::cin>>x[j]>>y[j];if((y[0]-y[1])/(x[0]-x[1])==(y[2]-y[3])/(x[2]-x[3]))std::cout<<"YES\n";else std::cout<<"NO\n";}}