#include <iostream>
 
int main(){
     
    double x1,y1,x2,y2,x3,y3,x4,y4;
int a;
    std::cin>>a;
    for(int s=0;s<a;s++){
        std::cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
        if((y2-y1)/(x2-x1)==(y4-y3)/(x4-x3)){
            std::cout<<"YES"<<std::endl;
        }else{
            std::cout<<"NO"<<std::endl;
        }
         
    }
    return 0;
}
 